#237BA4#237BA4

#237BA4 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.1% C 0.102 H 233.7°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#237BA4
RGB	rgb(35, 123, 164)
HSL	hsl(199, 65%, 39%)
HSV	hsv(199, 79%, 64%)
CMYK	cmyk(78.7%, 25%, 0%, 35.7%)
CIE-LAB	lab(48.51, -11.07, -29.18)
CIE-LCH	lch(48.51, 31.20, 249.23°)
OKLab	oklab(55.12% -0.0604 -0.0822)
OKLCH	oklch(55.12% 0.102 233.7)
XYZ	xyz(14.4742, 17.2018, 37.6722)
Luminance	0.1720 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237BA4 #A44C23

analogous

#23A48D #237BA4 #233BA4

triadic

#237BA4 #A4237B #7BA423

tetradic

#237BA4 #8D23A4 #A44C23 #3BA423

square

#237BA4 #8D23A4 #A44C23 #3BA423

split-complementary

#237BA4 #A4233B #A48D23

monochromatic

#0D2F3F #185572 #237BA4 #31A0D3 #64B7DE

Accessibility & contrast

On white

4.73

#237BA4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#237BA4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237BA4

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237BA4	#FFFFFF	#000000	##FFFFFF
##237BA4	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#677AA6

Deuteranopia (green-blind)

#566EA3

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #237ba4;
/* rgb */ color: rgb(35, 123, 164);
/* oklch */ color: oklch(55.1% 0.102 233.7);

Tailwind

colors: {
  custom: {
    50: '#72a1bf',
    500: '#237ba4',
    950: '#000000',
  },
}

SCSS

$custom: #237ba4;
$custom-light: #72a1bf;
$custom-dark: #000000;

JSON

{
  "hex": "#237ba4",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 164
  },
  "hsl": {
    "h": 199.07,
    "s": 64.824,
    "l": 39.02
  },
  "oklch": {
    "l": 0.55117,
    "c": 0.10201,
    "h": 233.7
  },
  "luminance": 0.17204
}

Semantic roles & 50–950 ramp

primary

#237BA4

secondary

#C37F60

accent

#7540E8

background

#F7F9FB

surface

#EDF2F7

border

#C8CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #237BA4

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

Preview Lab → · Contrast checker → · Palette generator →