#231F70#231F70

#231F70 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.134 H 277.1°. Best body text is #FFFFFF at 13.99:1 contrast (WCAG AA passes).

Color values

HEX	#231F70
RGB	rgb(35, 31, 112)
HSL	hsl(243, 57%, 28%)
HSV	hsv(243, 72%, 44%)
CMYK	cmyk(68.8%, 72.3%, 0%, 56.1%)
CIE-LAB	lab(17.95, 29.12, -46.11)
CIE-LCH	lch(17.95, 54.53, 302.28°)
OKLab	oklab(30.5% 0.0165 -0.1331)
OKLCH	oklch(30.5% 0.134 277.1)
XYZ	xyz(4.1068, 2.5068, 15.5935)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F70 #6C701F

analogous

#1F4370 #231F70 #4B1F70

triadic

#231F70 #70231F #1F7023

tetradic

#231F70 #701F43 #6C701F #1F704B

square

#231F70 #701F43 #6C701F #1F704B

split-complementary

#231F70 #704B1F #43701F

monochromatic

#070718 #141240 #231F70 #322CA0 #463FCA

Accessibility & contrast

On white

13.99

#231F70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#231F70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F70

13.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F70	#FFFFFF	#000000	##FFFFFF
##231F70	1.00	13.99	1.50	13.99
#FFFFFF	13.99	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F72

Deuteranopia (green-blind)

#00286E

Tritanopia (blue-blind)

#003545

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #231f70;
/* rgb */ color: rgb(35, 31, 112);
/* oklch */ color: oklch(30.5% 0.134 277.1);

Tailwind

colors: {
  custom: {
    50: '#695b9a',
    500: '#231f70',
    950: '#000000',
  },
}

SCSS

$custom: #231f70;
$custom-light: #695b9a;
$custom-dark: #000000;

JSON

{
  "hex": "#231f70",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 112
  },
  "hsl": {
    "h": 242.963,
    "s": 56.643,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30496,
    "c": 0.1341,
    "h": 277.1
  },
  "luminance": 0.02507
}

Semantic roles & 50–950 ramp

primary

#231F70

secondary

#9FA447

accent

#E048D8

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #231F70

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

Preview Lab → · Contrast checker → · Palette generator →