#233F79#233F79

#233F79 is a dark, moderate blue. Relative luminance 0.053; OKLCH L 37.9% C 0.105 H 263.0°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#233F79
RGB	rgb(35, 63, 121)
HSL	hsl(220, 55%, 31%)
HSV	hsv(220, 71%, 47%)
CMYK	cmyk(71.1%, 47.9%, 0%, 52.5%)
CIE-LAB	lab(27.55, 10.48, -36.27)
CIE-LCH	lch(27.55, 37.75, 286.12°)
OKLab	oklab(37.9% -0.0128 -0.1038)
OKLCH	oklch(37.9% 0.105 263)
XYZ	xyz(5.9206, 5.2922, 18.7949)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233F79 #795D23

analogous

#236A79 #233F79 #322379

triadic

#233F79 #79233F #3F7923

tetradic

#233F79 #79236A #795D23 #237932

square

#233F79 #79236A #795D23 #237932

split-complementary

#233F79 #793223 #6A7923

monochromatic

#080E1A #15264A #233F79 #3158A8 #4B75CB

Accessibility & contrast

On white

10.20

#233F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#233F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233F79

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233F79	#FFFFFF	#000000	##FFFFFF
##233F79	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22457B

Deuteranopia (green-blind)

#103D78

Tritanopia (blue-blind)

#004C56

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #233f79;
/* rgb */ color: rgb(35, 63, 121);
/* oklch */ color: oklch(37.9% 0.105 263.0);

Tailwind

colors: {
  custom: {
    50: '#6973a0',
    500: '#233f79',
    950: '#000000',
  },
}

SCSS

$custom: #233f79;
$custom-light: #6973a0;
$custom-dark: #000000;

JSON

{
  "hex": "#233f79",
  "rgb": {
    "r": 35,
    "g": 63,
    "b": 121
  },
  "hsl": {
    "h": 220.465,
    "s": 55.128,
    "l": 30.588
  },
  "oklch": {
    "l": 0.37896,
    "c": 0.1046,
    "h": 263
  },
  "luminance": 0.05293
}

Semantic roles & 50–950 ramp

primary

#233F79

secondary

#AC8D4C

accent

#AE49DE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07080F

muted

#7A7B7E

Preview Lab

Preview with #233F79

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

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