#231F4E#231F4E

#231F4E is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.3% C 0.084 H 283.2°. Best body text is #FFFFFF at 15.25:1 contrast (WCAG AA passes).

Color values

HEX	#231F4E
RGB	rgb(35, 31, 78)
HSL	hsl(245, 43%, 21%)
HSV	hsv(245, 60%, 31%)
CMYK	cmyk(55.1%, 60.3%, 0%, 69.4%)
CIE-LAB	lab(14.88, 16.72, -28.50)
CIE-LCH	lch(14.88, 33.04, 300.39°)
OKLab	oklab(27.3% 0.0191 -0.0814)
OKLCH	oklch(27.3% 0.084 283.2)
XYZ	xyz(2.5579, 1.8872, 7.4357)
Luminance	0.0189 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.85

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231F4E #4A4E1F

analogous

#1F334E #231F4E #3B1F4E

triadic

#231F4E #4E231F #1F4E23

tetradic

#231F4E #4E1F33 #4A4E1F #1F4E3B

square

#231F4E #4E1F33 #4A4E1F #1F4E3B

split-complementary

#231F4E #4E3B1F #334E1F

monochromatic

#0A0916 #0F0E22 #231F4E #37307A #4A42A6

Accessibility & contrast

On white

15.25

#231F4E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#231F4E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231F4E

15.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231F4E	#FFFFFF	#000000	##FFFFFF
##231F4E	1.00	15.25	1.38	15.25
#FFFFFF	15.25	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#052750

Deuteranopia (green-blind)

#02244D

Tritanopia (blue-blind)

#132A33

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #231f4e;
/* rgb */ color: rgb(35, 31, 78);
/* oklch */ color: oklch(27.3% 0.084 283.2);

Tailwind

colors: {
  custom: {
    50: '#625a80',
    500: '#231f4e',
    950: '#000000',
  },
}

SCSS

$custom: #231f4e;
$custom-light: #625a80;
$custom-dark: #000000;

JSON

{
  "hex": "#231f4e",
  "rgb": {
    "r": 35,
    "g": 31,
    "b": 78
  },
  "hsl": {
    "h": 245.106,
    "s": 43.119,
    "l": 21.373
  },
  "oklch": {
    "l": 0.27302,
    "c": 0.0836,
    "h": 283.2
  },
  "luminance": 0.01887
}

Semantic roles & 50–950 ramp

primary

#231F4E

secondary

#7E8346

accent

#D355C8

background

#F6F5F7

surface

#EBE9EE

border

#C6C5C9

text

#05040A

muted

#7A797C

Preview Lab

Preview with #231F4E

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

Preview Lab → · Contrast checker → · Palette generator →