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Colour

#017CFF

  • #017CFF
  • Blue
  • Dark
  • Nearest: Royal blue

#017CFF is a blue with RGB values 1, 124, 255 and HSL 211°, 100%, 50%. It is a dark colour, so black text on it reaches 5.3:1 contrast (AA for normal text). The nearest named colour is Royal blue.

Colour values

#017CFF#017CFF
HEX#017CFF
RGBrgb(1, 124, 255)
RGB (0–1)0.0039, 0.4863, 1
RGB percentages0.4%, 48.6%, 100%
HSLhsl(210.9, 100%, 50.2%)
HSV / HSBhsv(210.9, 99.6%, 100%)
CMYK99.6%, 51.4%, 0%, 0%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer97,535
CSS custom property--colour: #017CFF;

Brightness & contrast

Relative luminance0.21642WCAG 2.x, 0 is black and 1 is white
Perceived brightness128.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.33:1
Contrast with white3.94:1WCAG normal text: Fail
Contrast with black5.33:1WCAG normal text: AA
Greyscale equivalent#6B6B6B
Inverted#FE8300

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#158BFFno red cones; affects about 1% of men; ΔE 11.9 from the original
Deuteranopia#0077FCno green cones; the most common form, about 1% of men; ΔE 2.7 from the original
Tritanopia#009DB2no blue cones; rare, and affects men and women equally; ΔE 71 from the original
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text3.94:1WCAG large text: AA
Contrast with black, large text5.33:1WCAG large text: AAA

Named colours

Royal blue · ΔE 10.6Dodgerblue · ΔE 15.7Medium slateblue · ΔE 21.1Slate blue · ΔE 22.5Medium purple · ΔE 27.4Cornflower blue · ΔE 27.5
Nearest named CSS colourRoyal blue (#4169E1)ΔE 10.63, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#FF8401
Analogous#01FBFF, #0501FF
Triadic#FF017C, #7CFF01
Split complementary#FF0501, #FBFF01
Tetradic#FF01FB, #FF8401, #01FF05

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#CDE5FF
Lighter +30%#9ACBFF
Lighter +20%#67B1FF
Lighter +10%#3496FF
Darker −10%#0063CD
Darker −20%#004B9A
Darker −30%#003267
Darker −40%#001934
More saturated +25%#017CFF
Less saturated −25%#217DDF

Channel breakdown

R1
G124
B255
Red1 (0.4%)
Green124 (48.6%)
Blue255 (100%)
Hue210.94°
Saturation (HSL)100%
Lightness50.2%
Dominant channelBlue
Hex per channelR 01 · G 7C · B FF

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Every value on this page was computed from “017cff” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.