#237FBC#237FBC

#237FBC is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.4% C 0.125 H 243.3°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#237FBC
RGB	rgb(35, 127, 188)
HSL	hsl(204, 69%, 44%)
HSV	hsv(204, 81%, 74%)
CMYK	cmyk(81.4%, 32.4%, 0%, 26.3%)
CIE-LAB	lab(50.88, -4.61, -39.35)
CIE-LCH	lch(50.88, 39.62, 263.32°)
OKLab	oklab(57.37% -0.0562 -0.1118)
OKLCH	oklch(57.37% 0.125 243.3)
XYZ	xyz(17.3561, 19.1648, 50.3516)
Luminance	0.1917 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237FBC #BC6023

analogous

#23BCAC #237FBC #2332BC

triadic

#237FBC #BC237F #7FBC23

tetradic

#237FBC #AC23BC #BC6023 #32BC23

square

#237FBC #AC23BC #BC6023 #32BC23

split-complementary

#237FBC #BC2332 #BCAC23

monochromatic

#103955 #195C88 #237FBC #419EDC #74B8E5

Accessibility & contrast

On white

4.34

#237FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#237FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237FBC

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237FBC	#FFFFFF	#000000	##000000
##237FBC	1.00	4.34	4.83	4.83
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6281BF

Deuteranopia (green-blind)

#4D73BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #237fbc;
/* rgb */ color: rgb(35, 127, 188);
/* oklch */ color: oklch(57.4% 0.125 243.3);

Tailwind

colors: {
  custom: {
    50: '#77a3d0',
    500: '#237fbc',
    950: '#000000',
  },
}

SCSS

$custom: #237fbc;
$custom-light: #77a3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#237fbc",
  "rgb": {
    "r": 35,
    "g": 127,
    "b": 188
  },
  "hsl": {
    "h": 203.922,
    "s": 68.61,
    "l": 43.725
  },
  "oklch": {
    "l": 0.57371,
    "c": 0.1251,
    "h": 243.3
  },
  "luminance": 0.19167
}

Semantic roles & 50–950 ramp

primary

#237FBC

secondary

#CC946F

accent

#823CEB

background

#F7FAFC

surface

#EEF3F9

border

#C9CDD2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #237FBC

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

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