#231F7A#231F7A

#231F7A is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.5% C 0.148 H 275.7°. Best body text is #FFFFFF at 13.56:1 contrast (WCAG AA passes).

Color values

HEX	#231F7A
RGB	rgb(35, 31, 122)
HSL	hsl(243, 59%, 30%)
HSV	hsv(243, 75%, 48%)
CMYK	cmyk(71.3%, 74.6%, 0%, 52.2%)
CIE-LAB	lab(18.98, 32.68, -50.84)
CIE-LCH	lch(18.98, 60.44, 302.73°)
OKLab	oklab(31.55% 0.0148 -0.1469)
OKLCH	oklch(31.55% 0.148 275.7)
XYZ	xyz(4.6948, 2.7420, 18.6904)
Luminance	0.0274 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F7A #767A1F

analogous

#1F497A #231F7A #501F7A

triadic

#231F7A #7A231F #1F7A23

tetradic

#231F7A #7A1F49 #767A1F #1F7A50

square

#231F7A #7A1F49 #767A1F #1F7A50

split-complementary

#231F7A #7A501F #497A1F

monochromatic

#070618 #151349 #231F7A #312BAB #4A44CF

Accessibility & contrast

On white

13.56

#231F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#231F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F7A

13.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F7A	#FFFFFF	#000000	##FFFFFF
##231F7A	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)

#00327D

Deuteranopia (green-blind)

#002A78

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231f7a;
/* rgb */ color: rgb(35, 31, 122);
/* oklch */ color: oklch(31.5% 0.148 275.7);

Tailwind

colors: {
  custom: {
    50: '#6c5ca1',
    500: '#231f7a',
    950: '#000000',
  },
}

SCSS

$custom: #231f7a;
$custom-light: #6c5ca1;
$custom-dark: #000000;

JSON

{
  "hex": "#231f7a",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 122
  },
  "hsl": {
    "h": 242.637,
    "s": 59.477,
    "l": 30
  },
  "oklch": {
    "l": 0.31547,
    "c": 0.14767,
    "h": 275.7
  },
  "luminance": 0.02742
}

Semantic roles & 50–950 ramp

primary

#231F7A

secondary

#A9AD47

accent

#E345DC

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#08040F

muted

#7A797F

Preview Lab

Preview with #231F7A

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

Preview Lab → · Contrast checker → · Palette generator →