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Recognised as Colour

#1D356E

  • #1D356E
  • Blue
  • Dark
  • Nearest: Dark slateblue

#1D356E is a blue with RGB values 29, 53, 110 and HSL 222°, 58%, 27%. It is a dark colour, so white text on it reaches 11.8:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.

Colour values

#1D356E#1D356E
HEX#1D356E
RGBrgb(29, 53, 110)
RGB (0–1)0.1137, 0.2078, 0.4314
RGB percentages11.4%, 20.8%, 43.1%
HSLhsl(222.2, 58.3%, 27.3%)
HSV / HSBhsv(222.2, 73.6%, 43.1%)
CMYK73.6%, 51.8%, 0%, 56.9%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer1,914,222
CSS custom property--colour: #1D356E;

Brightness & contrast

Relative luminance0.03933WCAG 2.x, 0 is black and 1 is white
Perceived brightness57.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.75:1
Contrast with white11.75:1WCAG normal text: AAA
Contrast with black1.79:1WCAG normal text: Fail
Greyscale equivalent#343434
Inverted#E2CA91

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#153C70no red cones; affects about 1% of men; ΔE 6 from the original
Deuteranopia#00346Dno green cones; the most common form, about 1% of men; ΔE 3.4 from the original
Tritanopia#00424Cno blue cones; rare, and affects men and women equally; ΔE 36.2 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text11.75:1WCAG large text: AAA
Contrast with black, large text1.79:1WCAG large text: Fail

Named colours

Dark slateblue · ΔE 17Midnight blue · ΔE 25.1Steel blue · ΔE 33.4Rebecca purple · ΔE 34.1Slate blue · ΔE 39.1Royal blue · ΔE 40.7
Nearest named CSS colourDark slateblue (#483D8B)ΔE 16.96, a distinctly different colour
Hue familyblue
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#6E561D
Analogous#1D5E6E, #2D1D6E
Triadic#6E1D35, #356E1D
Split complementary#6E2E1D, #5E6E1D
Tetradic#6E1D5E, #6E561D, #1D6E2E

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#7B98DC
Lighter +30%#5278D2
Lighter +20%#325CBF
Lighter +10%#284896
Darker −10%#122246
Darker −20%#080E1D
Darker −30%#000000
Darker −40%#000000
More saturated +25%#0C2E7F
Less saturated −25%#2E3C5D

Channel breakdown

R29
G53
B110
Red29 (11.4%)
Green53 (20.8%)
Blue110 (43.1%)
Hue222.22°
Saturation (HSL)58.27%
Lightness27.25%
Dominant channelBlue
Hex per channelR 1D · G 35 · B 6E

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Every value on this page was computed from “1d356e” by Nerdulator’s colour engine. Nothing here was retrieved from a database of answers or written by a model.