#1F2C77#1F2C77

#1F2C77 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.3% C 0.129 H 270.3°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F2C77
RGB	rgb(31, 44, 119)
HSL	hsl(231, 59%, 29%)
HSV	hsv(231, 74%, 47%)
CMYK	cmyk(73.9%, 63%, 0%, 53.3%)
CIE-LAB	lab(21.67, 22.38, -44.53)
CIE-LCH	lch(21.67, 49.84, 296.68°)
OKLab	oklab(33.35% 0.0006 -0.1285)
OKLCH	oklch(33.35% 0.129 270.3)
XYZ	xyz(4.7944, 3.4241, 17.8574)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2C77 #776A1F

analogous

#1F5877 #1F2C77 #3E1F77

triadic

#1F2C77 #771F2C #2C771F

tetradic

#1F2C77 #771F58 #776A1F #1F773E

square

#1F2C77 #771F58 #776A1F #1F773E

split-complementary

#1F2C77 #773E1F #58771F

monochromatic

#060918 #121A46 #1F2C77 #2C3EA8 #4357CE

Accessibility & contrast

On white

12.46

#1F2C77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#1F2C77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2C77

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2C77	#FFFFFF	#000000	##FFFFFF
##1F2C77	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003879

Deuteranopia (green-blind)

#003076

Tritanopia (blue-blind)

#003F4D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1f2c77;
/* rgb */ color: rgb(31, 44, 119);
/* oklch */ color: oklch(33.3% 0.129 270.3);

Tailwind

colors: {
  custom: {
    50: '#68659f',
    500: '#1f2c77',
    950: '#000000',
  },
}

SCSS

$custom: #1f2c77;
$custom-light: #68659f;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2c77",
  "rgb": {
    "r": 31,
    "g": 44,
    "b": 119
  },
  "hsl": {
    "h": 231.136,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.33346,
    "c": 0.1285,
    "h": 270.3
  },
  "luminance": 0.03425
}

Semantic roles & 50–950 ramp

primary

#1F2C77

secondary

#AB9C47

accent

#CB46E2

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050E

muted

#7A7A7E

Preview Lab

Preview with #1F2C77

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

Preview Lab → · Contrast checker → · Palette generator →