#231C7B#231C7B

#231C7B is a dark, vivid blue. Relative luminance 0.026; OKLCH L 31.2% C 0.152 H 276.2°. Best body text is #FFFFFF at 13.78:1 contrast (WCAG AA passes).

Color values

HEX	#231C7B
RGB	rgb(35, 28, 123)
HSL	hsl(244, 63%, 30%)
HSV	hsv(244, 77%, 48%)
CMYK	cmyk(71.5%, 77.2%, 0%, 51.8%)
CIE-LAB	lab(18.44, 34.84, -52.37)
CIE-LCH	lch(18.44, 62.90, 303.63°)
OKLab	oklab(31.2% 0.0164 -0.1514)
OKLCH	oklch(31.2% 0.152 276.2)
XYZ	xyz(4.6824, 2.6175, 18.9935)
Luminance	0.0262 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C7B #747B1C

analogous

#1C457B #231C7B #531C7B

triadic

#231C7B #7B231C #1C7B23

tetradic

#231C7B #7B1C45 #747B1C #1C7B53

square

#231C7B #7B1C45 #747B1C #1C7B53

split-complementary

#231C7B #7B531C #457B1C

monochromatic

#070619 #151149 #231C7B #3127AD #493ED3

Accessibility & contrast

On white

13.78

#231C7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#231C7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C7B

13.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C7B	#FFFFFF	#000000	##FFFFFF
##231C7B	1.00	13.78	1.52	13.78
#FFFFFF	13.78	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317E

Deuteranopia (green-blind)

#002979

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #231c7b;
/* rgb */ color: rgb(35, 28, 123);
/* oklch */ color: oklch(31.2% 0.152 276.2);

Tailwind

colors: {
  custom: {
    50: '#6c5aa2',
    500: '#231c7b',
    950: '#000000',
  },
}

SCSS

$custom: #231c7b;
$custom-light: #6c5aa2;
$custom-dark: #000000;

JSON

{
  "hex": "#231c7b",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 123
  },
  "hsl": {
    "h": 244.421,
    "s": 62.914,
    "l": 29.608
  },
  "oklch": {
    "l": 0.31197,
    "c": 0.15225,
    "h": 276.2
  },
  "luminance": 0.02618
}

Semantic roles & 50–950 ramp

primary

#231C7B

secondary

#A7AF44

accent

#E642DA

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231C7B

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

Preview Lab → · Contrast checker → · Palette generator →