#231B82#231B82

#231B82 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.8% C 0.162 H 275.4°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#231B82
RGB	rgb(35, 27, 130)
HSL	hsl(245, 66%, 31%)
HSV	hsv(245, 79%, 51%)
CMYK	cmyk(73.1%, 79.2%, 0%, 49%)
CIE-LAB	lab(19.02, 37.78, -55.85)
CIE-LCH	lch(19.02, 67.43, 304.08°)
OKLab	oklab(31.84% 0.0153 -0.1615)
OKLCH	oklch(31.84% 0.162 275.4)
XYZ	xyz(5.1130, 2.7524, 21.3766)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B82 #7A821B

analogous

#1B4682 #231B82 #561B82

triadic

#231B82 #82231B #1B8223

tetradic

#231B82 #821B46 #7A821B #1B8256

square

#231B82 #821B46 #7A821B #1B8256

split-complementary

#231B82 #82561B #46821B

monochromatic

#08061D #15104F #231B82 #3126B5 #4C40D7

Accessibility & contrast

On white

13.54

#231B82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#231B82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B82

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B82	#FFFFFF	#000000	##FFFFFF
##231B82	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003385

Deuteranopia (green-blind)

#002A80

Tritanopia (blue-blind)

#003A4E

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #231b82;
/* rgb */ color: rgb(35, 27, 130);
/* oklch */ color: oklch(31.8% 0.162 275.4);

Tailwind

colors: {
  custom: {
    50: '#6e5aa7',
    500: '#231b82',
    950: '#000000',
  },
}

SCSS

$custom: #231b82;
$custom-light: #6e5aa7;
$custom-dark: #000000;

JSON

{
  "hex": "#231b82",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 130
  },
  "hsl": {
    "h": 244.66,
    "s": 65.605,
    "l": 30.784
  },
  "oklch": {
    "l": 0.3184,
    "c": 0.16222,
    "h": 275.4
  },
  "luminance": 0.02753
}

Semantic roles & 50–950 ramp

primary

#231B82

secondary

#ADB643

accent

#E93FDB

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #231B82

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

Preview Lab → · Contrast checker → · Palette generator →