#237CB2#237CB2

#237CB2 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.116 H 240.9°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#237CB2
RGB	rgb(35, 124, 178)
HSL	hsl(203, 67%, 42%)
HSV	hsv(203, 80%, 70%)
CMYK	cmyk(80.3%, 30.3%, 0%, 30.2%)
CIE-LAB	lab(49.48, -6.54, -35.80)
CIE-LCH	lch(49.48, 36.39, 259.65°)
OKLab	oklab(56.1% -0.0566 -0.1014)
OKLCH	oklch(56.1% 0.116 240.9)
XYZ	xyz(15.9335, 17.9850, 44.7425)
Luminance	0.1799 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237CB2 #B25923

analogous

#23B2A1 #237CB2 #2335B2

triadic

#237CB2 #B2237C #7CB223

tetradic

#237CB2 #A123B2 #B25923 #35B223

square

#237CB2 #A123B2 #B25923 #35B223

split-complementary

#237CB2 #B22335 #B2A123

monochromatic

#0F354C #19587F #237CB2 #3A9CD8 #6DB6E2

Accessibility & contrast

On white

4.57

#237CB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#237CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237CB2

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237CB2	#FFFFFF	#000000	##000000
##237CB2	1.00	4.57	4.60	4.60
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB4

Deuteranopia (green-blind)

#4F70B1

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #237cb2;
/* rgb */ color: rgb(35, 124, 178);
/* oklch */ color: oklch(56.1% 0.116 240.9);

Tailwind

colors: {
  custom: {
    50: '#75a1c9',
    500: '#237cb2',
    950: '#000000',
  },
}

SCSS

$custom: #237cb2;
$custom-light: #75a1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#237cb2",
  "rgb": {
    "r": 35,
    "g": 124,
    "b": 178
  },
  "hsl": {
    "h": 202.657,
    "s": 67.136,
    "l": 41.765
  },
  "oklch": {
    "l": 0.561,
    "c": 0.11616,
    "h": 240.9
  },
  "luminance": 0.17987
}

Semantic roles & 50–950 ramp

primary

#237CB2

secondary

#C98D68

accent

#7F3EEA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #237CB2

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

Preview Lab → · Contrast checker → · Palette generator →