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Recognised as Colour

#1D2640

  • #1D2640
  • Blue
  • Dark
  • Nearest: Black

#1D2640 is a blue with RGB values 29, 38, 64 and HSL 225°, 38%, 18%. It is a dark colour, so white text on it reaches 15:1 contrast (AAA for normal text). The nearest named colour is Black.

Colour values

#1D2640#1D2640
HEX#1D2640
RGBrgb(29, 38, 64)
RGB (0–1)0.1137, 0.149, 0.251
RGB percentages11.4%, 14.9%, 25.1%
HSLhsl(224.6, 37.6%, 18.2%)
HSV / HSBhsv(224.6, 54.7%, 25.1%)
CMYK54.7%, 40.6%, 0%, 74.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,910,336
CSS custom property--colour: #1D2640;

Brightness & contrast

Relative luminance0.02018WCAG 2.x, 0 is black and 1 is white
Perceived brightness39.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.96:1
Contrast with white14.96:1WCAG normal text: AAA
Contrast with black1.4:1WCAG normal text: Fail
Greyscale equivalent#262626
Inverted#E2D9BF

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#1C2941no red cones; affects about 1% of men; ΔE 2.5 from the original
Deuteranopia#19253Fno green cones; the most common form, about 1% of men; ΔE 1.1 from the original
Tritanopia#0F2B30no blue cones; rare, and affects men and women equally; ΔE 17.6 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.96:1WCAG large text: AAA
Contrast with black, large text1.4:1WCAG large text: Fail

Named colours

Black · ΔE 24.1Dark slate grey · ΔE 26.7Dim grey · ΔE 34.2Dark slateblue · ΔE 35.7Slate grey · ΔE 38.6Steel blue · ΔE 40.6
Nearest named CSS colourBlack (#000000)ΔE 24.11, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#40371D
Analogous#1D3840, #251D40
Triadic#401D26, #26401D
Split complementary#40251D, #38401D
Tetradic#401D38, #40371D, #1D4025

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#6C81BD
Lighter +30%#4D65A9
Lighter +20%#3D5086
Lighter +10%#2D3B63
Darker −10%#0D111D
Darker −20%#000000
Darker −30%#000000
Darker −40%#000000
More saturated +25%#11204C
Less saturated −25%#292C34

Channel breakdown

R29
G38
B64
Red29 (11.4%)
Green38 (14.9%)
Blue64 (25.1%)
Hue224.57°
Saturation (HSL)37.63%
Lightness18.24%
Dominant channelBlue
Hex per channelR 1D · G 26 · B 40

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Every value on this page was computed from “1d2640” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.