#233B8C#233B8C

#233B8C is a dark, vivid blue. Relative luminance 0.054; OKLCH L 38.5% C 0.138 H 267.1°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#233B8C
RGB	rgb(35, 59, 140)
HSL	hsl(226, 60%, 34%)
HSV	hsv(226, 75%, 55%)
CMYK	cmyk(75%, 57.9%, 0%, 45.1%)
CIE-LAB	lab(27.79, 20.74, -47.75)
CIE-LCH	lch(27.79, 52.06, 293.48°)
OKLab	oklab(38.52% -0.007 -0.1376)
OKLCH	oklch(38.52% 0.138 267.1)
XYZ	xyz(6.9891, 5.3780, 25.4756)
Luminance	0.0538 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B8C #8C7423

analogous

#23708C #233B8C #40238C

triadic

#233B8C #8C233B #3B8C23

tetradic

#233B8C #8C2370 #8C7423 #238C40

square

#233B8C #8C2370 #8C7423 #238C40

split-complementary

#233B8C #8C4023 #708C23

monochromatic

#0B122A #17265B #233B8C #2F50BD #5572D4

Accessibility & contrast

On white

10.12

#233B8C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.08

#233B8C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B8C

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B8C	#FFFFFF	#000000	##FFFFFF
##233B8C	1.00	10.12	2.08	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.08	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00478F

Deuteranopia (green-blind)

#003D8A

Tritanopia (blue-blind)

#004F5D

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #233b8c;
/* rgb */ color: rgb(35, 59, 140);
/* oklch */ color: oklch(38.5% 0.138 267.1);

Tailwind

colors: {
  custom: {
    50: '#6e70ae',
    500: '#233b8c',
    950: '#000000',
  },
}

SCSS

$custom: #233b8c;
$custom-light: #6e70ae;
$custom-dark: #000000;

JSON

{
  "hex": "#233b8c",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 140
  },
  "hsl": {
    "h": 226.286,
    "s": 60,
    "l": 34.314
  },
  "oklch": {
    "l": 0.38519,
    "c": 0.13783,
    "h": 267.1
  },
  "luminance": 0.05379
}

Semantic roles & 50–950 ramp

primary

#233B8C

secondary

#B8A152

accent

#BF45E3

background

#F7F6FA

surface

#EDECF4

border

#C8C7CE

text

#080710

muted

#7B7A7F

Preview Lab

Preview with #233B8C

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

Preview Lab → · Contrast checker → · Palette generator →