#231F9D#231F9D

#231F9D is a dark, vivid blue. Relative luminance 0.038; OKLCH L 35.5% C 0.192 H 272.2°. Best body text is #FFFFFF at 11.97:1 contrast (WCAG AA passes).

Color values

HEX	#231F9D
RGB	rgb(35, 31, 157)
HSL	hsl(242, 67%, 37%)
HSV	hsv(242, 80%, 62%)
CMYK	cmyk(77.7%, 80.3%, 0%, 38.4%)
CIE-LAB	lab(22.90, 44.55, -66.23)
CIE-LCH	lch(22.90, 79.82, 303.92°)
OKLab	oklab(35.47% 0.0073 -0.1917)
OKLCH	oklch(35.47% 0.192 272.2)
XYZ	xyz(7.2669, 3.7708, 32.2366)
Luminance	0.0377 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F9D #999D1F

analogous

#1F5A9D #231F9D #621F9D

triadic

#231F9D #9D231F #1F9D23

tetradic

#231F9D #9D1F5A #999D1F #1F9D62

square

#231F9D #9D1F5A #999D1F #1F9D62

split-complementary

#231F9D #9D621F #5A9D1F

monochromatic

#0C0B37 #18156A #231F9D #2E29D0 #5D58DE

Accessibility & contrast

On white

11.97

#231F9D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#231F9D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F9D

11.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F9D	#FFFFFF	#000000	##FFFFFF
##231F9D	1.00	11.97	1.75	11.97
#FFFFFF	11.97	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	11.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA1

Deuteranopia (green-blind)

#00309B

Tritanopia (blue-blind)

#00465E

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #231f9d;
/* rgb */ color: rgb(35, 31, 157);
/* oklch */ color: oklch(35.5% 0.192 272.2);

Tailwind

colors: {
  custom: {
    50: '#745ebb',
    500: '#231f9d',
    950: '#000000',
  },
}

SCSS

$custom: #231f9d;
$custom-light: #745ebb;
$custom-dark: #000000;

JSON

{
  "hex": "#231f9d",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 157
  },
  "hsl": {
    "h": 241.905,
    "s": 67.021,
    "l": 36.863
  },
  "oklch": {
    "l": 0.35471,
    "c": 0.19183,
    "h": 272.2
  },
  "luminance": 0.03772
}

Semantic roles & 50–950 ramp

primary

#231F9D

secondary

#BEC256

accent

#EA3EE4

background

#F7F5FB

surface

#EEE9F6

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231F9D

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

Preview Lab → · Contrast checker → · Palette generator →