#231B85#231B85

#231B85 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 32.2% C 0.166 H 275.0°. Best body text is #FFFFFF at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#231B85
RGB	rgb(35, 27, 133)
HSL	hsl(245, 66%, 31%)
HSV	hsv(245, 80%, 52%)
CMYK	cmyk(73.7%, 79.7%, 0%, 47.8%)
CIE-LAB	lab(19.37, 38.79, -57.18)
CIE-LCH	lch(19.37, 69.09, 304.15°)
OKLab	oklab(32.18% 0.0146 -0.1654)
OKLCH	oklch(32.18% 0.166 275)
XYZ	xyz(5.3173, 2.8341, 22.4526)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B85 #7D851B

analogous

#1B4885 #231B85 #581B85

triadic

#231B85 #85231B #1B8523

tetradic

#231B85 #851B48 #7D851B #1B8558

square

#231B85 #851B48 #7D851B #1B8558

split-complementary

#231B85 #85581B #48851B

monochromatic

#08061F #161152 #231B85 #3025B8 #4D42D9

Accessibility & contrast

On white

13.40

#231B85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#231B85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B85

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B85	#FFFFFF	#000000	##FFFFFF
##231B85	1.00	13.40	1.57	13.40
#FFFFFF	13.40	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003488

Deuteranopia (green-blind)

#002A83

Tritanopia (blue-blind)

#003B4F

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #231b85;
/* rgb */ color: rgb(35, 27, 133);
/* oklch */ color: oklch(32.2% 0.166 275.0);

Tailwind

colors: {
  custom: {
    50: '#6f5aaa',
    500: '#231b85',
    950: '#000000',
  },
}

SCSS

$custom: #231b85;
$custom-light: #6f5aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#231b85",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 133
  },
  "hsl": {
    "h": 244.528,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.32182,
    "c": 0.166,
    "h": 275
  },
  "luminance": 0.02835
}

Semantic roles & 50–950 ramp

primary

#231B85

secondary

#AFB844

accent

#E93FDC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #231B85

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

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