#1F336A#1F336A

#1F336A is a dark, moderate blue. Relative luminance 0.037; OKLCH L 33.8% C 0.099 H 266.2°. Best body text is #FFFFFF at 12.07:1 contrast (WCAG AA passes).

Color values

HEX	#1F336A
RGB	rgb(31, 51, 106)
HSL	hsl(224, 55%, 27%)
HSV	hsv(224, 71%, 42%)
CMYK	cmyk(70.8%, 51.9%, 0%, 58.4%)
CIE-LAB	lab(22.65, 12.24, -34.59)
CIE-LCH	lch(22.65, 36.69, 289.49°)
OKLab	oklab(33.76% -0.0066 -0.0992)
OKLCH	oklch(33.76% 0.099 266.2)
XYZ	xyz(4.3495, 3.6991, 14.1177)
Luminance	0.0370 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F336A #6A561F

analogous

#1F596A #1F336A #311F6A

triadic

#1F336A #6A1F33 #336A1F

tetradic

#1F336A #6A1F59 #6A561F #1F6A31

square

#1F336A #6A1F59 #6A561F #1F6A31

split-complementary

#1F336A #6A311F #596A1F

monochromatic

#070B18 #111C3B #1F336A #2D4A99 #3D62C6

Accessibility & contrast

On white

12.07

#1F336A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#1F336A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F336A

12.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F336A	#FFFFFF	#000000	##FFFFFF
##1F336A	1.00	12.07	1.74	12.07
#FFFFFF	12.07	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#153A6C

Deuteranopia (green-blind)

#023369

Tritanopia (blue-blind)

#004049

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #1f336a;
/* rgb */ color: rgb(31, 51, 106);
/* oklch */ color: oklch(33.8% 0.099 266.2);

Tailwind

colors: {
  custom: {
    50: '#646a95',
    500: '#1f336a',
    950: '#000000',
  },
}

SCSS

$custom: #1f336a;
$custom-light: #646a95;
$custom-dark: #000000;

JSON

{
  "hex": "#1f336a",
  "rgb": {
    "r": 31,
    "g": 51,
    "b": 106
  },
  "hsl": {
    "h": 224,
    "s": 54.745,
    "l": 26.863
  },
  "oklch": {
    "l": 0.33756,
    "c": 0.09938,
    "h": 266.2
  },
  "luminance": 0.037
}

Semantic roles & 50–950 ramp

primary

#1F336A

secondary

#9E8747

accent

#B74ADE

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060D

muted

#7A7A7E

Preview Lab

Preview with #1F336A

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

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