#233E7B#233E7B

#233E7B is a dark, moderate blue. Relative luminance 0.052; OKLCH L 37.8% C 0.109 H 264.0°. Best body text is #FFFFFF at 10.26:1 contrast (WCAG AA passes).

Color values

HEX	#233E7B
RGB	rgb(35, 62, 123)
HSL	hsl(222, 56%, 31%)
HSV	hsv(222, 72%, 48%)
CMYK	cmyk(71.5%, 49.6%, 0%, 51.8%)
CIE-LAB	lab(27.39, 11.96, -37.79)
CIE-LCH	lch(27.39, 39.64, 287.57°)
OKLab	oklab(37.81% -0.0114 -0.1083)
OKLCH	oklch(37.81% 0.109 264)
XYZ	xyz(5.9897, 5.2320, 19.4293)
Luminance	0.0523 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233E7B #7B6023

analogous

#236A7B #233E7B #34237B

triadic

#233E7B #7B233E #3E7B23

tetradic

#233E7B #7B236A #7B6023 #237B34

square

#233E7B #7B236A #7B6023 #237B34

split-complementary

#233E7B #7B3423 #6A7B23

monochromatic

#080E1C #15264B #233E7B #3156AB #4C73CC

Accessibility & contrast

On white

10.26

#233E7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#233E7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233E7B

10.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233E7B	#FFFFFF	#000000	##FFFFFF
##233E7B	1.00	10.26	2.05	10.26
#FFFFFF	10.26	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E457D

Deuteranopia (green-blind)

#083D7A

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233e7b;
/* rgb */ color: rgb(35, 62, 123);
/* oklch */ color: oklch(37.8% 0.109 264.0);

Tailwind

colors: {
  custom: {
    50: '#6972a2',
    500: '#233e7b',
    950: '#000000',
  },
}

SCSS

$custom: #233e7b;
$custom-light: #6972a2;
$custom-dark: #000000;

JSON

{
  "hex": "#233e7b",
  "rgb": {
    "r": 35,
    "g": 62,
    "b": 123
  },
  "hsl": {
    "h": 221.591,
    "s": 55.696,
    "l": 30.98
  },
  "oklch": {
    "l": 0.37813,
    "c": 0.10892,
    "h": 264
  },
  "luminance": 0.05233
}

Semantic roles & 50–950 ramp

primary

#233E7B

secondary

#AE904C

accent

#B149DF

background

#F6F6FA

surface

#ECECF3

border

#C7C7CD

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #233E7B

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

Preview Lab → · Contrast checker → · Palette generator →