Nerdulator> put something in

Recognised as Colour

#31B7FD

  • #31B7FD
  • Blue
  • Dark
  • Nearest: Deep skyblue

#31B7FD is a blue with RGB values 49, 183, 253 and HSL 201°, 98%, 59%. It is a dark colour, so black text on it reaches 9.3:1 contrast (AAA for normal text). The nearest named colour is Deep skyblue.

Colour values

#31B7FD#31B7FD
HEX#31B7FD
RGBrgb(49, 183, 253)
RGB (0–1)0.1922, 0.7176, 0.9922
RGB percentages19.2%, 71.8%, 99.2%
HSLhsl(200.6, 98.1%, 59.2%)
HSV / HSBhsv(200.6, 80.6%, 99.2%)
CMYK80.6%, 27.7%, 0%, 0.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,258,365
CSS custom property--colour: #31B7FD;

Brightness & contrast

Relative luminance0.41612WCAG 2.x, 0 is black and 1 is white
Perceived brightness166.4 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 9.32:1
Contrast with white2.25:1WCAG normal text: Fail
Contrast with black9.32:1WCAG normal text: AAA
Greyscale equivalent#A0A0A0
Inverted#CE4802

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#95B7FFno red cones; affects about 1% of men; ΔE 19.3 from the original
Deuteranopia#7AA4FCno green cones; the most common form, about 1% of men; ΔE 22.1 from the original
Tritanopia#00C9CFno blue cones; rare, and affects men and women equally; ΔE 40 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text2.25:1WCAG large text: Fail
Contrast with black, large text9.32:1WCAG large text: AAA

Named colours

Deep skyblue · ΔE 6.5Light skyblue · ΔE 18.4Steel blue · ΔE 23.2Cornflower blue · ΔE 23.3Sky blue · ΔE 24.9Dodgerblue · ΔE 30.9
Nearest named CSS colourDeep skyblue (#00BFFF)ΔE 6.5, clearly different but related
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FD7731
Analogous#31FDDD, #3151FD
Triadic#FD31B7, #B7FD31
Split complementary#FD3151, #FDDD31
Tetradic#DD31FD, #FD7731, #51FD31

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#FBFEFF
Lighter +30%#C9ECFE
Lighter +20%#96DAFE
Lighter +10%#64C9FD
Darker −10%#02A4F9
Darker −20%#0283C6
Darker −30%#016194
Darker −40%#014061
More saturated +25%#2FB8FF
Less saturated −25%#4BAFE3

Channel breakdown

R49
G183
B253
Red49 (19.2%)
Green183 (71.8%)
Blue253 (99.2%)
Hue200.59°
Saturation (HSL)98.08%
Lightness59.22%
Dominant channelBlue
Hex per channelR 31 · G B7 · B FD

Keep nerding

Every link below is a page Nerdulator can generate from what it already knows about this value.

Nerdulate something else

Nothing in mind? Surprise me · today’s page

Every value on this page was computed from “31b7fd” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.