Nerdulator> put something in

Recognised as Colour

#281F72

  • #281F72
  • Blue
  • Dark
  • Nearest: Midnight blue

#281F72 is a blue with RGB values 40, 31, 114 and HSL 247°, 57%, 28%. It is a dark colour, so white text on it reaches 13.7:1 contrast (AAA for normal text). The nearest named colour is Midnight blue.

Colour values

#281F72#281F72
HEX#281F72
RGBrgb(40, 31, 114)
RGB (0–1)0.1569, 0.1216, 0.4471
RGB percentages15.7%, 12.2%, 44.7%
HSLhsl(246.5, 57.2%, 28.4%)
HSV / HSBhsv(246.5, 72.8%, 44.7%)
CMYK64.9%, 72.8%, 0%, 55.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,629,490
CSS custom property--colour: #281F72;

Brightness & contrast

Relative luminance0.02646WCAG 2.x, 0 is black and 1 is white
Perceived brightness50.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.73:1
Contrast with white13.73:1WCAG normal text: AAA
Contrast with black1.53:1WCAG normal text: Fail
Greyscale equivalent#272727
Inverted#D7E08D

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#003075no red cones; affects about 1% of men; ΔE 15.4 from the original
Deuteranopia#002A70no green cones; the most common form, about 1% of men; ΔE 12.9 from the original
Tritanopia#003546no blue cones; rare, and affects men and women equally; ΔE 50.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.73:1WCAG large text: AAA
Contrast with black, large text1.53:1WCAG large text: Fail

Named colours

Midnight blue · ΔE 4.3Dark slateblue · ΔE 13.8Rebecca purple · ΔE 18.9Indigo · ΔE 22.3Navy · ΔE 25.6Slate blue · ΔE 29.6
Nearest named CSS colourMidnight blue (#191970)ΔE 4.35, a close match
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#69721F
Analogous#1F3F72, #521F72
Triadic#72281F, #1F7228
Split complementary#72521F, #3F721F
Tetradic#721F3F, #69721F, #1F7252

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8A80DD
Lighter +30%#6558D2
Lighter +20%#4435C2
Lighter +10%#362A9A
Darker −10%#1A144A
Darker −20%#0C0922
Darker −30%#000000
Darker −40%#000000
More saturated +25%#1A0D84
Less saturated −25%#363160

Channel breakdown

R40
G31
B114
Red40 (15.7%)
Green31 (12.2%)
Blue114 (44.7%)
Hue246.51°
Saturation (HSL)57.24%
Lightness28.43%
Dominant channelBlue
Hex per channelR 28 · G 1F · B 72

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 “281f72” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.