#1F3276#1F3276

#1F3276 is a dark, moderate blue. Relative luminance 0.039; OKLCH L 34.5% C 0.119 H 267.8°. Best body text is #FFFFFF at 11.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F3276
RGB	rgb(31, 50, 118)
HSL	hsl(227, 58%, 29%)
HSV	hsv(227, 74%, 46%)
CMYK	cmyk(73.7%, 57.6%, 0%, 53.7%)
CIE-LAB	lab(23.27, 17.76, -41.29)
CIE-LCH	lch(23.27, 44.94, 293.28°)
OKLab	oklab(34.52% -0.0045 -0.1189)
OKLCH	oklch(34.52% 0.119 267.8)
XYZ	xyz(4.9746, 3.8800, 17.6228)
Luminance	0.0388 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3276 #76631F

analogous

#1F5E76 #1F3276 #381F76

triadic

#1F3276 #761F32 #32761F

tetradic

#1F3276 #761F5E #76631F #1F7638

square

#1F3276 #761F5E #76631F #1F7638

split-complementary

#1F3276 #76381F #5E761F

monochromatic

#060A18 #121D46 #1F3276 #2C47A6 #4260CD

Accessibility & contrast

On white

11.82

#1F3276 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F3276 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3276

11.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3276	#FFFFFF	#000000	##FFFFFF
##1F3276	1.00	11.82	1.78	11.82
#FFFFFF	11.82	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C78

Deuteranopia (green-blind)

#003475

Tritanopia (blue-blind)

#00434E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f3276;
/* rgb */ color: rgb(31, 50, 118);
/* oklch */ color: oklch(34.5% 0.119 267.8);

Tailwind

colors: {
  custom: {
    50: '#67699e',
    500: '#1f3276',
    950: '#000000',
  },
}

SCSS

$custom: #1f3276;
$custom-light: #67699e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3276",
  "rgb": {
    "r": 31,
    "g": 50,
    "b": 118
  },
  "hsl": {
    "h": 226.897,
    "s": 58.389,
    "l": 29.216
  },
  "oklch": {
    "l": 0.34516,
    "c": 0.11896,
    "h": 267.8
  },
  "luminance": 0.03881
}

Semantic roles & 50–950 ramp

primary

#1F3276

secondary

#AA9447

accent

#C046E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060E

muted

#7A7A7E

Preview Lab

Preview with #1F3276

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

Preview Lab → · Contrast checker → · Palette generator →