#233B79#233B79

#233B79 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 37.0% C 0.110 H 265.4°. Best body text is #FFFFFF at 10.64:1 contrast (WCAG AA passes).

Color values

HEX	#233B79
RGB	rgb(35, 59, 121)
HSL	hsl(223, 55%, 31%)
HSV	hsv(223, 71%, 47%)
CMYK	cmyk(71.1%, 51.2%, 0%, 52.5%)
CIE-LAB	lab(26.35, 13.26, -38.21)
CIE-LCH	lch(26.35, 40.44, 289.14°)
OKLab	oklab(36.97% -0.0088 -0.1096)
OKLCH	oklch(36.97% 0.11 265.4)
XYZ	xyz(5.7071, 4.8652, 18.7238)
Luminance	0.0487 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233B79 #796123

analogous

#236679 #233B79 #362379

triadic

#233B79 #79233B #3B7923

tetradic

#233B79 #792366 #796123 #237936

square

#233B79 #792366 #796123 #237936

split-complementary

#233B79 #793623 #667923

monochromatic

#080D1A #15244A #233B79 #3152A8 #4B6FCB

Accessibility & contrast

On white

10.64

#233B79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#233B79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233B79

10.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233B79	#FFFFFF	#000000	##FFFFFF
##233B79	1.00	10.64	1.97	10.64
#FFFFFF	10.64	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#18427B

Deuteranopia (green-blind)

#013B78

Tritanopia (blue-blind)

#004A54

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233b79;
/* rgb */ color: rgb(35, 59, 121);
/* oklch */ color: oklch(37.0% 0.110 265.4);

Tailwind

colors: {
  custom: {
    50: '#6970a0',
    500: '#233b79',
    950: '#000000',
  },
}

SCSS

$custom: #233b79;
$custom-light: #6970a0;
$custom-dark: #000000;

JSON

{
  "hex": "#233b79",
  "rgb": {
    "r": 35,
    "g": 59,
    "b": 121
  },
  "hsl": {
    "h": 223.256,
    "s": 55.128,
    "l": 30.588
  },
  "oklch": {
    "l": 0.36974,
    "c": 0.10993,
    "h": 265.4
  },
  "luminance": 0.04866
}

Semantic roles & 50–950 ramp

primary

#233B79

secondary

#AC914C

accent

#B549DE

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#07070F

muted

#7A7A7E

Preview Lab

Preview with #233B79

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

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