#237AA4#237AA4

#237AA4 is a mid, moderate cyan. Relative luminance 0.170; OKLCH L 54.9% C 0.103 H 234.6°. Best body text is #FFFFFF at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#237AA4
RGB	rgb(35, 122, 164)
HSL	hsl(200, 65%, 39%)
HSV	hsv(200, 79%, 64%)
CMYK	cmyk(78.7%, 25.6%, 0%, 35.7%)
CIE-LAB	lab(48.20, -10.49, -29.66)
CIE-LCH	lch(48.20, 31.46, 250.52°)
OKLab	oklab(54.87% -0.0594 -0.0836)
OKLCH	oklch(54.87% 0.103 234.6)
XYZ	xyz(14.3508, 16.9550, 37.6311)
Luminance	0.1696 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237AA4 #A44D23

analogous

#23A48E #237AA4 #233AA4

triadic

#237AA4 #A4237A #7AA423

tetradic

#237AA4 #8E23A4 #A44D23 #3AA423

square

#237AA4 #8E23A4 #A44D23 #3AA423

split-complementary

#237AA4 #A4233A #A48E23

monochromatic

#0D2F3F #185472 #237AA4 #319ED3 #64B6DE

Accessibility & contrast

On white

4.78

#237AA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#237AA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237AA4

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237AA4	#FFFFFF	#000000	##FFFFFF
##237AA4	1.00	4.78	4.39	4.78
#FFFFFF	4.78	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6579A6

Deuteranopia (green-blind)

#546DA3

Tritanopia (blue-blind)

#008588

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #237aa4;
/* rgb */ color: rgb(35, 122, 164);
/* oklch */ color: oklch(54.9% 0.103 234.6);

Tailwind

colors: {
  custom: {
    50: '#72a0bf',
    500: '#237aa4',
    950: '#000000',
  },
}

SCSS

$custom: #237aa4;
$custom-light: #72a0bf;
$custom-dark: #000000;

JSON

{
  "hex": "#237aa4",
  "rgb": {
    "r": 35,
    "g": 122,
    "b": 164
  },
  "hsl": {
    "h": 199.535,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.5487,
    "c": 0.10259,
    "h": 234.6
  },
  "luminance": 0.16957
}

Semantic roles & 50–950 ramp

primary

#237AA4

secondary

#C38060

accent

#7740E8

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #237AA4

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

Preview Lab → · Contrast checker → · Palette generator →