#231B60#231B60

#231B60 is a dark, moderate blue. Relative luminance 0.020; OKLCH L 28.2% C 0.117 H 281.1°. Best body text is #FFFFFF at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#231B60
RGB	rgb(35, 27, 96)
HSL	hsl(247, 56%, 24%)
HSV	hsv(247, 72%, 38%)
CMYK	cmyk(63.5%, 71.9%, 0%, 62.4%)
CIE-LAB	lab(15.41, 25.99, -39.77)
CIE-LCH	lch(15.41, 47.51, 303.16°)
OKLab	oklab(28.18% 0.0225 -0.1145)
OKLCH	oklch(28.18% 0.117 281.1)
XYZ	xyz(3.1957, 1.9855, 11.2789)
Luminance	0.0199 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B60 #58601B

analogous

#1B3660 #231B60 #461B60

triadic

#231B60 #60231B #1B6023

tetradic

#231B60 #601B36 #58601B #1B6046

square

#231B60 #601B36 #58601B #1B6046

split-complementary

#231B60 #60461B #36601B

monochromatic

#090718 #120E30 #231B60 #342890 #4636C0

Accessibility & contrast

On white

15.03

#231B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#231B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B60

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B60	#FFFFFF	#000000	##FFFFFF
##231B60	1.00	15.03	1.40	15.03
#FFFFFF	15.03	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002962

Deuteranopia (green-blind)

#00245F

Tritanopia (blue-blind)

#002D3B

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #231b60;
/* rgb */ color: rgb(35, 27, 96);
/* oklch */ color: oklch(28.2% 0.117 281.1);

Tailwind

colors: {
  custom: {
    50: '#66588e',
    500: '#231b60',
    950: '#000000',
  },
}

SCSS

$custom: #231b60;
$custom-light: #66588e;
$custom-dark: #000000;

JSON

{
  "hex": "#231b60",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 96
  },
  "hsl": {
    "h": 246.957,
    "s": 56.098,
    "l": 24.118
  },
  "oklch": {
    "l": 0.28183,
    "c": 0.11671,
    "h": 281.1
  },
  "luminance": 0.01986
}

Semantic roles & 50–950 ramp

primary

#231B60

secondary

#8C9641

accent

#DF48CE

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #231B60

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

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