#231D7B#231D7B

#231D7B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.3% C 0.151 H 276.0°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#231D7B
RGB	rgb(35, 29, 123)
HSL	hsl(244, 62%, 30%)
HSV	hsv(244, 76%, 48%)
CMYK	cmyk(71.5%, 76.4%, 0%, 51.8%)
CIE-LAB	lab(18.65, 34.25, -52.02)
CIE-LCH	lch(18.65, 62.28, 303.36°)
OKLab	oklab(31.35% 0.0158 -0.1504)
OKLCH	oklch(31.35% 0.151 276)
XYZ	xyz(4.7065, 2.6657, 19.0015)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231D7B #757B1D

analogous

#1D467B #231D7B #521D7B

triadic

#231D7B #7B231D #1D7B23

tetradic

#231D7B #7B1D46 #757B1D #1D7B52

square

#231D7B #7B1D46 #757B1D #1D7B52

split-complementary

#231D7B #7B521D #467B1D

monochromatic

#070619 #151149 #231D7B #3129AD #4A40D2

Accessibility & contrast

On white

13.70

#231D7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#231D7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231D7B

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231D7B	#FFFFFF	#000000	##FFFFFF
##231D7B	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002979

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231d7b;
/* rgb */ color: rgb(35, 29, 123);
/* oklch */ color: oklch(31.3% 0.151 276.0);

Tailwind

colors: {
  custom: {
    50: '#6c5aa2',
    500: '#231d7b',
    950: '#000000',
  },
}

SCSS

$custom: #231d7b;
$custom-light: #6c5aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#231d7b",
  "rgb": {
    "r": 35,
    "g": 29,
    "b": 123
  },
  "hsl": {
    "h": 243.83,
    "s": 61.842,
    "l": 29.804
  },
  "oklch": {
    "l": 0.31346,
    "c": 0.15118,
    "h": 276
  },
  "luminance": 0.02666
}

Semantic roles & 50–950 ramp

primary

#231D7B

secondary

#A8AF45

accent

#E543DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231D7B

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

Preview Lab → · Contrast checker → · Palette generator →