#2333A8#2333A8

#2333A8 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.6% C 0.186 H 269.2°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#2333A8
RGB	rgb(35, 51, 168)
HSL	hsl(233, 66%, 40%)
HSV	hsv(233, 79%, 66%)
CMYK	cmyk(79.2%, 69.6%, 0%, 34.1%)
CIE-LAB	lab(28.25, 36.67, -64.07)
CIE-LCH	lch(28.25, 73.82, 299.79°)
OKLab	oklab(39.63% -0.0027 -0.1855)
OKLCH	oklch(39.63% 0.186 269.2)
XYZ	xyz(8.9424, 5.5511, 37.6384)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2333A8 #A89823

analogous

#2376A8 #2333A8 #5623A8

triadic

#2333A8 #A82333 #33A823

tetradic

#2333A8 #A82376 #A89823 #23A856

square

#2333A8 #A82376 #A89823 #23A856

split-complementary

#2333A8 #A85623 #76A823

monochromatic

#0E1443 #182475 #2333A8 #3447D5 #6675DF

Accessibility & contrast

On white

9.95

#2333A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2333A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2333A8

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2333A8	#FFFFFF	#000000	##FFFFFF
##2333A8	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AC

Deuteranopia (green-blind)

#003CA6

Tritanopia (blue-blind)

#005369

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2333a8;
/* rgb */ color: rgb(35, 51, 168);
/* oklch */ color: oklch(39.6% 0.186 269.2);

Tailwind

colors: {
  custom: {
    50: '#756bc3',
    500: '#2333a8',
    950: '#000000',
  },
}

SCSS

$custom: #2333a8;
$custom-light: #756bc3;
$custom-dark: #000000;

JSON

{
  "hex": "#2333a8",
  "rgb": {
    "r": 35,
    "g": 51,
    "b": 168
  },
  "hsl": {
    "h": 232.782,
    "s": 65.517,
    "l": 39.804
  },
  "oklch": {
    "l": 0.39634,
    "c": 0.18556,
    "h": 269.2
  },
  "luminance": 0.05552
}

Semantic roles & 50–950 ramp

primary

#2333A8

secondary

#C5B962

accent

#D43FE8

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #2333A8

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

Preview Lab → · Contrast checker → · Palette generator →