#237FB1#237FB1

#237FB1 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 56.8% C 0.113 H 238.1°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#237FB1
RGB	rgb(35, 127, 177)
HSL	hsl(201, 67%, 42%)
HSV	hsv(201, 80%, 69%)
CMYK	cmyk(80.2%, 28.2%, 0%, 30.6%)
CIE-LAB	lab(50.34, -8.66, -33.86)
CIE-LCH	lch(50.34, 34.95, 255.66°)
OKLab	oklab(56.77% -0.0597 -0.0958)
OKLCH	oklch(56.77% 0.113 238.1)
XYZ	xyz(16.2152, 18.7084, 44.3429)
Luminance	0.1871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237FB1 #B15523

analogous

#23B19C #237FB1 #2338B1

triadic

#237FB1 #B1237F #7FB123

tetradic

#237FB1 #9C23B1 #B15523 #38B123

square

#237FB1 #9C23B1 #B15523 #38B123

split-complementary

#237FB1 #B12338 #B19C23

monochromatic

#0F364B #195A7E #237FB1 #39A0D8 #6CB9E2

Accessibility & contrast

On white

4.43

#237FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#237FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237FB1

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237FB1	#FFFFFF	#000000	##000000
##237FB1	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#677FB3

Deuteranopia (green-blind)

#5472B0

Tritanopia (blue-blind)

#008C90

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #237fb1;
/* rgb */ color: rgb(35, 127, 177);
/* oklch */ color: oklch(56.8% 0.113 238.1);

Tailwind

colors: {
  custom: {
    50: '#75a4c8',
    500: '#237fb1',
    950: '#000000',
  },
}

SCSS

$custom: #237fb1;
$custom-light: #75a4c8;
$custom-dark: #000000;

JSON

{
  "hex": "#237fb1",
  "rgb": {
    "r": 35,
    "g": 127,
    "b": 177
  },
  "hsl": {
    "h": 201.127,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56771,
    "c": 0.11286,
    "h": 238.1
  },
  "luminance": 0.1871
}

Semantic roles & 50–950 ramp

primary

#237FB1

secondary

#C88A68

accent

#7A3EEA

background

#F7FAFC

surface

#EEF3F8

border

#C9CDD1

text

#0A0F13

muted

#7C7F82

Preview Lab

Preview with #237FB1

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

Preview Lab → · Contrast checker → · Palette generator →