#231B65#231B65

#231B65 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 28.7% C 0.124 H 280.1°. Best body text is #FFFFFF at 14.83:1 contrast (WCAG AA passes).

Color values

HEX	#231B65
RGB	rgb(35, 27, 101)
HSL	hsl(246, 58%, 25%)
HSV	hsv(246, 73%, 40%)
CMYK	cmyk(65.3%, 73.3%, 0%, 60.4%)
CIE-LAB	lab(15.90, 27.76, -42.27)
CIE-LCH	lch(15.90, 50.58, 303.30°)
OKLab	oklab(28.69% 0.0216 -0.1219)
OKLCH	oklch(28.69% 0.124 280.1)
XYZ	xyz(3.4333, 2.0805, 12.5301)
Luminance	0.0208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#231B65 #5D651B

analogous

#1B3865 #231B65 #481B65

triadic

#231B65 #65231B #1B6523

tetradic

#231B65 #651B38 #5D651B #1B6548

square

#231B65 #651B38 #5D651B #1B6548

split-complementary

#231B65 #65481B #38651B

monochromatic

#080618 #120E35 #231B65 #342895 #4435C6

Accessibility & contrast

On white

14.83

#231B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#231B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #231B65

14.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##231B65	#FFFFFF	#000000	##FFFFFF
##231B65	1.00	14.83	1.42	14.83
#FFFFFF	14.83	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A67

Deuteranopia (green-blind)

#002564

Tritanopia (blue-blind)

#002F3D

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #231b65;
/* rgb */ color: rgb(35, 27, 101);
/* oklch */ color: oklch(28.7% 0.124 280.1);

Tailwind

colors: {
  custom: {
    50: '#675892',
    500: '#231b65',
    950: '#000000',
  },
}

SCSS

$custom: #231b65;
$custom-light: #675892;
$custom-dark: #000000;

JSON

{
  "hex": "#231b65",
  "rgb": {
    "r": 35,
    "g": 27,
    "b": 101
  },
  "hsl": {
    "h": 246.486,
    "s": 57.813,
    "l": 25.098
  },
  "oklch": {
    "l": 0.2869,
    "c": 0.12376,
    "h": 280.1
  },
  "luminance": 0.02081
}

Semantic roles & 50–950 ramp

primary

#231B65

secondary

#919A41

accent

#E147D0

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#07030D

muted

#7A787E

Preview Lab

Preview with #231B65

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

Preview Lab → · Contrast checker → · Palette generator →