#231A66#231A66

#231A66 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.6% C 0.126 H 280.2°. Best body text is #FFFFFF at 14.88:1 contrast (WCAG AA passes).

Color values

HEX	#231A66
RGB	rgb(35, 26, 102)
HSL	hsl(247, 59%, 25%)
HSV	hsv(247, 75%, 40%)
CMYK	cmyk(65.7%, 74.5%, 0%, 60%)
CIE-LAB	lab(15.77, 28.75, -43.15)
CIE-LCH	lch(15.77, 51.85, 303.68°)
OKLab	oklab(28.63% 0.0223 -0.1244)
OKLCH	oklch(28.63% 0.126 280.2)
XYZ	xyz(3.4600, 2.0552, 12.7821)
Luminance	0.0205 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231A66 #5D661A

analogous

#1A3766 #231A66 #491A66

triadic

#231A66 #66231A #1A6623

tetradic

#231A66 #661A37 #5D661A #1A6649

square

#231A66 #661A37 #5D661A #1A6649

split-complementary

#231A66 #66491A #37661A

monochromatic

#080618 #120E35 #231A66 #342697 #4433C8

Accessibility & contrast

On white

14.88

#231A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.41

#231A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231A66

14.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231A66	#FFFFFF	#000000	##FFFFFF
##231A66	1.00	14.88	1.41	14.88
#FFFFFF	14.88	1.00	21.00	1.00
#000000	1.41	21.00	1.00	21.00
##FFFFFF	14.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A68

Deuteranopia (green-blind)

#002465

Tritanopia (blue-blind)

#002F3E

Achromatopsia (no color)

#272727

Design tokens & code

CSS

--color: #231a66;
/* rgb */ color: rgb(35, 26, 102);
/* oklch */ color: oklch(28.6% 0.126 280.2);

Tailwind

colors: {
  custom: {
    50: '#675792',
    500: '#231a66',
    950: '#000000',
  },
}

SCSS

$custom: #231a66;
$custom-light: #675792;
$custom-dark: #000000;

JSON

{
  "hex": "#231a66",
  "rgb": {
    "r": 35,
    "g": 26,
    "b": 102
  },
  "hsl": {
    "h": 247.105,
    "s": 59.375,
    "l": 25.098
  },
  "oklch": {
    "l": 0.28627,
    "c": 0.1264,
    "h": 280.2
  },
  "luminance": 0.02055
}

Semantic roles & 50–950 ramp

primary

#231A66

secondary

#919C40

accent

#E345D0

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#07030D

muted

#7A787E

Preview Lab

Preview with #231A66

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

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