#231D77#231D77

#231D77 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.9% C 0.146 H 276.5°. Best body text is #FFFFFF at 13.87:1 contrast (WCAG AA passes).

Color values

HEX	#231D77
RGB	rgb(35, 29, 119)
HSL	hsl(244, 61%, 29%)
HSV	hsv(244, 76%, 47%)
CMYK	cmyk(70.6%, 75.6%, 0%, 53.3%)
CIE-LAB	lab(18.22, 32.85, -50.17)
CIE-LCH	lch(18.22, 59.97, 303.22°)
OKLab	oklab(30.91% 0.0166 -0.145)
OKLCH	oklch(30.91% 0.146 276.5)
XYZ	xyz(4.4612, 2.5676, 17.7097)
Luminance	0.0257 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D77 #71771D

analogous

#1D4477 #231D77 #501D77

triadic

#231D77 #77231D #1D7723

tetradic

#231D77 #771D44 #71771D #1D7750

square

#231D77 #771D44 #71771D #1D7750

split-complementary

#231D77 #77501D #44771D

monochromatic

#070619 #151146 #231D77 #3129A8 #483ED0

Accessibility & contrast

On white

13.87

#231D77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#231D77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D77

13.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D77	#FFFFFF	#000000	##FFFFFF
##231D77	1.00	13.87	1.51	13.87
#FFFFFF	13.87	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307A

Deuteranopia (green-blind)

#002975

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #231d77;
/* rgb */ color: rgb(35, 29, 119);
/* oklch */ color: oklch(30.9% 0.146 276.5);

Tailwind

colors: {
  custom: {
    50: '#6b5a9f',
    500: '#231d77',
    950: '#000000',
  },
}

SCSS

$custom: #231d77;
$custom-light: #6b5a9f;
$custom-dark: #000000;

JSON

{
  "hex": "#231d77",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 119
  },
  "hsl": {
    "h": 244,
    "s": 60.811,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30911,
    "c": 0.14591,
    "h": 276.5
  },
  "luminance": 0.02568
}

Semantic roles & 50–950 ramp

primary

#231D77

secondary

#A4AB45

accent

#E444D9

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#08040F

muted

#7A797E

Preview Lab

Preview with #231D77

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

Preview Lab → · Contrast checker → · Palette generator →