#231A5F#231A5F

#231A5F is a dark, moderate blue. Relative luminance 0.019; OKLCH L 27.9% C 0.117 H 281.7°. Best body text is #FFFFFF at 15.17:1 contrast (WCAG AA passes).

Color values

HEX	#231A5F
RGB	rgb(35, 26, 95)
HSL	hsl(248, 57%, 24%)
HSV	hsv(248, 73%, 37%)
CMYK	cmyk(63.2%, 72.6%, 0%, 62.7%)
CIE-LAB	lab(15.07, 26.29, -39.66)
CIE-LCH	lch(15.07, 47.58, 303.54°)
OKLab	oklab(27.91% 0.0236 -0.1142)
OKLCH	oklch(27.91% 0.117 281.7)
XYZ	xyz(3.1274, 1.9221, 11.0305)
Luminance	0.0192 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231A5F #565F1A

analogous

#1A335F #231A5F #451A5F

triadic

#231A5F #5F231A #1A5F23

tetradic

#231A5F #5F1A33 #565F1A #1A5F45

square

#231A5F #5F1A33 #565F1A #1A5F45

split-complementary

#231A5F #5F451A #335F1A

monochromatic

#090718 #110D2F #231A5F #35278F #4634BF

Accessibility & contrast

On white

15.17

#231A5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#231A5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231A5F

15.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231A5F	#FFFFFF	#000000	##FFFFFF
##231A5F	1.00	15.17	1.38	15.17
#FFFFFF	15.17	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002861

Deuteranopia (green-blind)

#00235E

Tritanopia (blue-blind)

#002C3A

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #231a5f;
/* rgb */ color: rgb(35, 26, 95);
/* oklch */ color: oklch(27.9% 0.117 281.7);

Tailwind

colors: {
  custom: {
    50: '#66578d',
    500: '#231a5f',
    950: '#000000',
  },
}

SCSS

$custom: #231a5f;
$custom-light: #66578d;
$custom-dark: #000000;

JSON

{
  "hex": "#231a5f",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 95
  },
  "hsl": {
    "h": 247.826,
    "s": 57.025,
    "l": 23.725
  },
  "oklch": {
    "l": 0.2791,
    "c": 0.1166,
    "h": 281.7
  },
  "luminance": 0.01922
}

Semantic roles & 50–950 ramp

primary

#231A5F

secondary

#8A9540

accent

#E048CC

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #231A5F

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

Preview Lab → · Contrast checker → · Palette generator →