#233D71#233D71

#233D71 is a dark, moderate blue. Relative luminance 0.049; OKLCH L 36.8% C 0.095 H 262.7°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#233D71
RGB	rgb(35, 61, 113)
HSL	hsl(220, 53%, 29%)
HSV	hsv(220, 69%, 44%)
CMYK	cmyk(69%, 46%, 0%, 55.7%)
CIE-LAB	lab(26.41, 8.72, -33.04)
CIE-LCH	lch(26.41, 34.17, 284.79°)
OKLab	oklab(36.85% -0.0122 -0.0943)
OKLCH	oklch(36.85% 0.095 262.7)
XYZ	xyz(5.3415, 4.8866, 16.2813)
Luminance	0.0489 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233D71 #715723

analogous

#236471 #233D71 #302371

triadic

#233D71 #71233D #3D7123

tetradic

#233D71 #712364 #715723 #237130

square

#233D71 #712364 #715723 #237130

split-complementary

#233D71 #713023 #647123

monochromatic

#070D17 #152442 #233D71 #3156A0 #4872C6

Accessibility & contrast

On white

10.62

#233D71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#233D71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233D71

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233D71	#FFFFFF	#000000	##FFFFFF
##233D71	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#244273

Deuteranopia (green-blind)

#173B70

Tritanopia (blue-blind)

#004951

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233d71;
/* rgb */ color: rgb(35, 61, 113);
/* oklch */ color: oklch(36.8% 0.095 262.7);

Tailwind

colors: {
  custom: {
    50: '#67729a',
    500: '#233d71',
    950: '#000000',
  },
}

SCSS

$custom: #233d71;
$custom-light: #67729a;
$custom-dark: #000000;

JSON

{
  "hex": "#233d71",
  "rgb": {
    "r": 35,
    "g": 61,
    "b": 113
  },
  "hsl": {
    "h": 220,
    "s": 52.703,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36846,
    "c": 0.09513,
    "h": 262.7
  },
  "luminance": 0.04887
}

Semantic roles & 50–950 ramp

primary

#233D71

secondary

#A4874C

accent

#AC4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #233D71

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

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