#231F80#231F80

#231F80 is a dark, vivid blue. Relative luminance 0.029; OKLCH L 32.2% C 0.156 H 275.0°. Best body text is #FFFFFF at 13.30:1 contrast (WCAG AA passes).

Color values

HEX	#231F80
RGB	rgb(35, 31, 128)
HSL	hsl(242, 61%, 31%)
HSV	hsv(242, 76%, 50%)
CMYK	cmyk(72.7%, 75.8%, 0%, 49.8%)
CIE-LAB	lab(19.62, 34.78, -53.60)
CIE-LCH	lch(19.62, 63.90, 302.98°)
OKLab	oklab(32.2% 0.0136 -0.155)
OKLCH	oklch(32.2% 0.156 275)
XYZ	xyz(5.0781, 2.8953, 20.7091)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F80 #7C801F

analogous

#1F4B80 #231F80 #531F80

triadic

#231F80 #80231F #1F8023

tetradic

#231F80 #801F4B #7C801F #1F8053

square

#231F80 #801F4B #7C801F #1F8053

split-complementary

#231F80 #80531F #4B801F

monochromatic

#08071D #16134F #231F80 #302BB1 #4D47D2

Accessibility & contrast

On white

13.30

#231F80 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#231F80 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F80

13.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F80	#FFFFFF	#000000	##FFFFFF
##231F80	1.00	13.30	1.58	13.30
#FFFFFF	13.30	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003483

Deuteranopia (green-blind)

#002B7E

Tritanopia (blue-blind)

#003B4D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231f80;
/* rgb */ color: rgb(35, 31, 128);
/* oklch */ color: oklch(32.2% 0.156 275.0);

Tailwind

colors: {
  custom: {
    50: '#6d5ca6',
    500: '#231f80',
    950: '#000000',
  },
}

SCSS

$custom: #231f80;
$custom-light: #6d5ca6;
$custom-dark: #000000;

JSON

{
  "hex": "#231f80",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 128
  },
  "hsl": {
    "h": 242.474,
    "s": 61.006,
    "l": 31.176
  },
  "oklch": {
    "l": 0.32195,
    "c": 0.15557,
    "h": 275
  },
  "luminance": 0.02896
}

Semantic roles & 50–950 ramp

primary

#231F80

secondary

#AFB348

accent

#E444DE

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08040F

muted

#7B797F

Preview Lab

Preview with #231F80

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

Preview Lab → · Contrast checker → · Palette generator →