#231C80#231C80

#231C80 is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.159 H 275.5°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#231C80
RGB	rgb(35, 28, 128)
HSL	hsl(244, 64%, 31%)
HSV	hsv(244, 78%, 50%)
CMYK	cmyk(72.7%, 78.1%, 0%, 49.8%)
CIE-LAB	lab(19.00, 36.54, -54.63)
CIE-LCH	lch(19.00, 65.73, 303.78°)
OKLab	oklab(31.75% 0.0153 -0.158)
OKLCH	oklch(31.75% 0.159 275.5)
XYZ	xyz(5.0034, 2.7459, 20.6842)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231C80 #79801C

analogous

#1C4780 #231C80 #551C80

triadic

#231C80 #80231C #1C8023

tetradic

#231C80 #801C47 #79801C #1C8055

square

#231C80 #801C47 #79801C #1C8055

split-complementary

#231C80 #80551C #47801C

monochromatic

#08061C #15114E #231C80 #3127B2 #4B41D5

Accessibility & contrast

On white

13.56

#231C80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#231C80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231C80

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231C80	#FFFFFF	#000000	##FFFFFF
##231C80	1.00	13.56	1.55	13.56
#FFFFFF	13.56	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003283

Deuteranopia (green-blind)

#002A7E

Tritanopia (blue-blind)

#00394D

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231c80;
/* rgb */ color: rgb(35, 28, 128);
/* oklch */ color: oklch(31.8% 0.159 275.5);

Tailwind

colors: {
  custom: {
    50: '#6d5aa6',
    500: '#231c80',
    950: '#000000',
  },
}

SCSS

$custom: #231c80;
$custom-light: #6d5aa6;
$custom-dark: #000000;

JSON

{
  "hex": "#231c80",
  "rgb": {
    "r": 35,
    "g": 28,
    "b": 128
  },
  "hsl": {
    "h": 244.2,
    "s": 64.103,
    "l": 30.588
  },
  "oklch": {
    "l": 0.31753,
    "c": 0.1587,
    "h": 275.5
  },
  "luminance": 0.02746
}

Semantic roles & 50–950 ramp

primary

#231C80

secondary

#ACB344

accent

#E741DB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231C80

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

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