#233D77#233D77

#233D77 is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.3% C 0.104 H 263.9°. Best body text is #FFFFFF at 10.47:1 contrast (WCAG AA passes).

Color values

HEX	#233D77
RGB	rgb(35, 61, 119)
HSL	hsl(221, 55%, 30%)
HSV	hsv(221, 71%, 47%)
CMYK	cmyk(70.6%, 48.7%, 0%, 53.3%)
CIE-LAB	lab(26.81, 11.08, -36.20)
CIE-LCH	lch(26.81, 37.86, 287.02°)
OKLab	oklab(37.28% -0.0111 -0.1036)
OKLCH	oklch(37.28% 0.104 263.9)
XYZ	xyz(5.6905, 5.0262, 18.1194)
Luminance	0.0503 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D77 #775D23

analogous

#236777 #233D77 #332377

triadic

#233D77 #77233D #3D7723

tetradic

#233D77 #772367 #775D23 #237733

square

#233D77 #772367 #775D23 #237733

split-complementary

#233D77 #773323 #677723

monochromatic

#070D18 #152548 #233D77 #3155A6 #4A72CA

Accessibility & contrast

On white

10.47

#233D77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#233D77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D77

10.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D77	#FFFFFF	#000000	##FFFFFF
##233D77	1.00	10.47	2.01	10.47
#FFFFFF	10.47	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4379

Deuteranopia (green-blind)

#0E3C76

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #233d77;
/* rgb */ color: rgb(35, 61, 119);
/* oklch */ color: oklch(37.3% 0.104 263.9);

Tailwind

colors: {
  custom: {
    50: '#69729f',
    500: '#233d77',
    950: '#000000',
  },
}

SCSS

$custom: #233d77;
$custom-light: #69729f;
$custom-dark: #000000;

JSON

{
  "hex": "#233d77",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 119
  },
  "hsl": {
    "h": 221.429,
    "s": 54.545,
    "l": 30.196
  },
  "oklch": {
    "l": 0.37283,
    "c": 0.10424,
    "h": 263.9
  },
  "luminance": 0.05027
}

Semantic roles & 50–950 ramp

primary

#233D77

secondary

#AA8D4C

accent

#B04ADE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070E

muted

#7A7A7E

Preview Lab

Preview with #233D77

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

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