#237BBC#237BBC

#237BBC is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.4% C 0.129 H 245.8°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#237BBC
RGB	rgb(35, 123, 188)
HSL	hsl(205, 69%, 44%)
HSV	hsv(205, 81%, 74%)
CMYK	cmyk(81.4%, 34.6%, 0%, 26.3%)
CIE-LAB	lab(49.68, -2.22, -41.25)
CIE-LCH	lch(49.68, 41.31, 266.92°)
OKLab	oklab(56.42% -0.0526 -0.1174)
OKLCH	oklch(56.42% 0.129 245.8)
XYZ	xyz(16.8497, 18.1520, 50.1828)
Luminance	0.1815 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237BBC #BC6423

analogous

#23BCB0 #237BBC #232EBC

triadic

#237BBC #BC237B #7BBC23

tetradic

#237BBC #B023BC #BC6423 #2EBC23

square

#237BBC #B023BC #BC6423 #2EBC23

split-complementary

#237BBC #BC232E #BCB023

monochromatic

#103755 #195988 #237BBC #419ADC #74B5E5

Accessibility & contrast

On white

4.53

#237BBC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#237BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237BBC

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237BBC	#FFFFFF	#000000	##000000
##237BBC	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7EBF

Deuteranopia (green-blind)

#4670BB

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #237bbc;
/* rgb */ color: rgb(35, 123, 188);
/* oklch */ color: oklch(56.4% 0.129 245.8);

Tailwind

colors: {
  custom: {
    50: '#77a0d0',
    500: '#237bbc',
    950: '#000000',
  },
}

SCSS

$custom: #237bbc;
$custom-light: #77a0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#237bbc",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 188
  },
  "hsl": {
    "h": 205.49,
    "s": 68.61,
    "l": 43.725
  },
  "oklch": {
    "l": 0.56424,
    "c": 0.12864,
    "h": 245.8
  },
  "luminance": 0.18154
}

Semantic roles & 50–950 ramp

primary

#237BBC

secondary

#CC966F

accent

#873CEB

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #237BBC

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

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