#1D368B#1D368B

#1D368B is a dark, vivid blue. Relative luminance 0.048; OKLCH L 37.1% C 0.145 H 266.6°. Best body text is #FFFFFF at 10.75:1 contrast (WCAG AA passes).

Color values

HEX	#1D368B
RGB	rgb(29, 54, 139)
HSL	hsl(226, 65%, 33%)
HSV	hsv(226, 79%, 55%)
CMYK	cmyk(79.1%, 61.2%, 0%, 45.5%)
CIE-LAB	lab(26.05, 23.06, -49.97)
CIE-LCH	lch(26.05, 55.03, 294.78°)
OKLab	oklab(37.12% -0.0087 -0.1444)
OKLCH	oklch(37.12% 0.145 266.6)
XYZ	xyz(6.4844, 4.7629, 24.9987)
Luminance	0.0476 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D368B #8B721D

analogous

#1D6D8B #1D368B #3B1D8B

triadic

#1D368B #8B1D36 #368B1D

tetradic

#1D368B #8B1D6D #8B721D #1D8B3B

square

#1D368B #8B1D6D #8B721D #1D8B3B

split-complementary

#1D368B #8B3B1D #6D8B1D

monochromatic

#080F26 #122258 #1D368B #284ABE #496AD9

Accessibility & contrast

On white

10.75

#1D368B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1D368B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D368B

10.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D368B	#FFFFFF	#000000	##FFFFFF
##1D368B	1.00	10.75	1.95	10.75
#FFFFFF	10.75	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00438E

Deuteranopia (green-blind)

#003989

Tritanopia (blue-blind)

#004C5B

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d368b;
/* rgb */ color: rgb(29, 54, 139);
/* oklch */ color: oklch(37.1% 0.145 266.6);

Tailwind

colors: {
  custom: {
    50: '#6c6cae',
    500: '#1d368b',
    950: '#000000',
  },
}

SCSS

$custom: #1d368b;
$custom-light: #6c6cae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d368b",
  "rgb": {
    "r": 29,
    "g": 54,
    "b": 139
  },
  "hsl": {
    "h": 226.364,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.37118,
    "c": 0.14464,
    "h": 266.6
  },
  "luminance": 0.04764
}

Semantic roles & 50–950 ramp

primary

#1D368B

secondary

#BBA149

accent

#C23FE8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #1D368B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →