#233CA4#233CA4

#233CA4 is a dark, vivid blue. Relative luminance 0.063; OKLCH L 40.9% C 0.170 H 267.5°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#233CA4
RGB	rgb(35, 60, 164)
HSL	hsl(228, 65%, 39%)
HSV	hsv(228, 79%, 64%)
CMYK	cmyk(78.7%, 63.4%, 0%, 35.7%)
CIE-LAB	lab(30.08, 29.34, -58.66)
CIE-LCH	lch(30.08, 65.58, 296.57°)
OKLab	oklab(40.86% -0.0074 -0.1697)
OKLCH	oklch(40.86% 0.17 267.5)
XYZ	xyz(9.0075, 6.2684, 35.8499)
Luminance	0.0627 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233CA4 #A48B23

analogous

#237DA4 #233CA4 #4B23A4

triadic

#233CA4 #A4233C #3CA423

tetradic

#233CA4 #A4237D #A48B23 #23A44B

square

#233CA4 #A4237D #A48B23 #23A44B

split-complementary

#233CA4 #A44B23 #7DA423

monochromatic

#0D173F #182A72 #233CA4 #3151D3 #647BDE

Accessibility & contrast

On white

9.32

#233CA4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#233CA4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233CA4

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233CA4	#FFFFFF	#000000	##FFFFFF
##233CA4	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DA7

Deuteranopia (green-blind)

#0041A2

Tritanopia (blue-blind)

#00576A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #233ca4;
/* rgb */ color: rgb(35, 60, 164);
/* oklch */ color: oklch(40.9% 0.170 267.5);

Tailwind

colors: {
  custom: {
    50: '#7471c0',
    500: '#233ca4',
    950: '#000000',
  },
}

SCSS

$custom: #233ca4;
$custom-light: #7471c0;
$custom-dark: #000000;

JSON

{
  "hex": "#233ca4",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 164
  },
  "hsl": {
    "h": 228.372,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.40858,
    "c": 0.16982,
    "h": 267.5
  },
  "luminance": 0.06269
}

Semantic roles & 50–950 ramp

primary

#233CA4

secondary

#C3B060

accent

#C740E8

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #233CA4

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

Preview Lab → · Contrast checker → · Palette generator →