#231BA0#231BA0

#231BA0 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 35.4% C 0.199 H 272.2°. Best body text is #FFFFFF at 12.10:1 contrast (WCAG AA passes).

Color values

HEX	#231BA0
RGB	rgb(35, 27, 160)
HSL	hsl(244, 71%, 37%)
HSV	hsv(244, 83%, 63%)
CMYK	cmyk(78.1%, 83.1%, 0%, 37.3%)
CIE-LAB	lab(22.58, 47.49, -68.60)
CIE-LCH	lch(22.58, 83.43, 304.69°)
OKLab	oklab(35.35% 0.0078 -0.1985)
OKLCH	oklch(35.35% 0.199 272.2)
XYZ	xyz(7.4281, 3.6784, 33.5694)
Luminance	0.0368 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231BA0 #98A01B

analogous

#1B56A0 #231BA0 #661BA0

triadic

#231BA0 #A0231B #1BA023

tetradic

#231BA0 #A01B56 #98A01B #1BA066

square

#231BA0 #A01B56 #98A01B #1BA066

split-complementary

#231BA0 #A0661B #56A01B

monochromatic

#0C0937 #18126C #231BA0 #2E24D4 #5C53E2

Accessibility & contrast

On white

12.10

#231BA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#231BA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231BA0

12.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231BA0	#FFFFFF	#000000	##FFFFFF
##231BA0	1.00	12.10	1.74	12.10
#FFFFFF	12.10	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003CA4

Deuteranopia (green-blind)

#002F9E

Tritanopia (blue-blind)

#00465F

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #231ba0;
/* rgb */ color: rgb(35, 27, 160);
/* oklch */ color: oklch(35.4% 0.199 272.2);

Tailwind

colors: {
  custom: {
    50: '#765cbe',
    500: '#231ba0',
    950: '#000000',
  },
}

SCSS

$custom: #231ba0;
$custom-light: #765cbe;
$custom-dark: #000000;

JSON

{
  "hex": "#231ba0",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 160
  },
  "hsl": {
    "h": 243.609,
    "s": 71.123,
    "l": 36.667
  },
  "oklch": {
    "l": 0.35352,
    "c": 0.19862,
    "h": 272.2
  },
  "luminance": 0.03679
}

Semantic roles & 50–950 ramp

primary

#231BA0

secondary

#BEC552

accent

#EE3AE3

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #231BA0

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

Preview Lab → · Contrast checker → · Palette generator →