#233C71#233C71

#233C71 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.6% C 0.096 H 263.4°. Best body text is #FFFFFF at 10.74:1 contrast (WCAG AA passes).

Color values

HEX	#233C71
RGB	rgb(35, 60, 113)
HSL	hsl(221, 53%, 29%)
HSV	hsv(221, 69%, 44%)
CMYK	cmyk(69%, 46.9%, 0%, 55.7%)
CIE-LAB	lab(26.10, 9.42, -33.53)
CIE-LCH	lch(26.10, 34.83, 285.69°)
OKLab	oklab(36.61% -0.0111 -0.0958)
OKLCH	oklch(36.61% 0.096 263.4)
XYZ	xyz(5.2886, 4.7808, 16.2637)
Luminance	0.0478 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#233C71 #715823

analogous

#236371 #233C71 #312371

triadic

#233C71 #71233C #3C7123

tetradic

#233C71 #712363 #715823 #237131

square

#233C71 #712363 #715823 #237131

split-complementary

#233C71 #713123 #637123

monochromatic

#070C17 #152342 #233C71 #3155A0 #4871C6

Accessibility & contrast

On white

10.74

#233C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#233C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #233C71

10.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##233C71	#FFFFFF	#000000	##FFFFFF
##233C71	1.00	10.74	1.96	10.74
#FFFFFF	10.74	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#224273

Deuteranopia (green-blind)

#153A70

Tritanopia (blue-blind)

#004851

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #233c71;
/* rgb */ color: rgb(35, 60, 113);
/* oklch */ color: oklch(36.6% 0.096 263.4);

Tailwind

colors: {
  custom: {
    50: '#67719a',
    500: '#233c71',
    950: '#000000',
  },
}

SCSS

$custom: #233c71;
$custom-light: #67719a;
$custom-dark: #000000;

JSON

{
  "hex": "#233c71",
  "rgb": {
    "r": 35,
    "g": 60,
    "b": 113
  },
  "hsl": {
    "h": 220.769,
    "s": 52.703,
    "l": 29.02
  },
  "oklch": {
    "l": 0.36609,
    "c": 0.09645,
    "h": 263.4
  },
  "luminance": 0.04781
}

Semantic roles & 50–950 ramp

primary

#233C71

secondary

#A4884C

accent

#AE4CDC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #233C71

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

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