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Recognised as Colour

#1D5488

  • #1D5488
  • Blue
  • Dark
  • Nearest: Steel blue

#1D5488 is a blue with RGB values 29, 84, 136 and HSL 209°, 65%, 32%. It is a dark colour, so white text on it reaches 7.8:1 contrast (AAA for normal text). The nearest named colour is Steel blue.

Colour values

#1D5488#1D5488
HEX#1D5488
RGBrgb(29, 84, 136)
RGB (0–1)0.1137, 0.3294, 0.5333
RGB percentages11.4%, 32.9%, 53.3%
HSLhsl(209.2, 64.8%, 32.4%)
HSV / HSBhsv(209.2, 78.7%, 53.3%)
CMYK78.7%, 38.2%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,922,184
CSS custom property--colour: #1D5488;

Brightness & contrast

Relative luminance0.08379WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 7.85:1
Contrast with white7.85:1WCAG normal text: AAA
Contrast with black2.68:1WCAG normal text: Fail
Greyscale equivalent#4C4C4C
Inverted#E2AB77

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#3C578Ano red cones; affects about 1% of men; ΔE 5.7 from the original
Deuteranopia#2C4D87no green cones; the most common form, about 1% of men; ΔE 7.1 from the original
Tritanopia#006067no blue cones; rare, and affects men and women equally; ΔE 32.4 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text7.85:1WCAG large text: AAA
Contrast with black, large text2.68:1WCAG large text: Fail

Named colours

Steel blue · ΔE 18.6Dark slateblue · ΔE 26.2Slate grey · ΔE 29.9Light slate grey · ΔE 31.5Cornflower blue · ΔE 32.1Dark slate grey · ΔE 33.3
Nearest named CSS colourSteel blue (#4682B4)ΔE 18.64, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#88511D
Analogous#1D8886, #1D1F88
Triadic#881D54, #54881D
Split complementary#881D1F, #88861D
Tetradic#861D88, #88511D, #1F881D

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#8BBAE6
Lighter +30%#61A1DD
Lighter +20%#3788D4
Lighter +10%#266EB2
Darker −10%#143A5E
Darker −20%#0B2034
Darker −30%#02060A
Darker −40%#000000
More saturated +25%#08559D
Less saturated −25%#325373

Channel breakdown

R29
G84
B136
Red29 (11.4%)
Green84 (32.9%)
Blue136 (53.3%)
Hue209.16°
Saturation (HSL)64.85%
Lightness32.35%
Dominant channelBlue
Hex per channelR 1D · G 54 · B 88

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Every value on this page was computed from “1d5488” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.