#237AB2#237AB2

#237AB2 is a mid, moderate cyan. Relative luminance 0.175; OKLCH L 55.6% C 0.118 H 242.3°. Best body text is #FFFFFF at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#237AB2
RGB	rgb(35, 122, 178)
HSL	hsl(203, 67%, 42%)
HSV	hsv(203, 80%, 70%)
CMYK	cmyk(80.3%, 31.5%, 0%, 30.2%)
CIE-LAB	lab(48.87, -5.36, -36.75)
CIE-LCH	lch(48.87, 37.14, 261.71°)
OKLab	oklab(55.62% -0.0547 -0.1043)
OKLCH	oklch(55.62% 0.118 242.3)
XYZ	xyz(15.6854, 17.4888, 44.6598)
Luminance	0.1749 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237AB2 #B25B23

analogous

#23B2A3 #237AB2 #2332B2

triadic

#237AB2 #B2237A #7AB223

tetradic

#237AB2 #A323B2 #B25B23 #32B223

square

#237AB2 #A323B2 #B25B23 #32B223

split-complementary

#237AB2 #B22332 #B2A323

monochromatic

#0F344C #19577F #237AB2 #3A9AD8 #6DB4E2

Accessibility & contrast

On white

4.67

#237AB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.50

#237AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #237AB2

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237AB2	#FFFFFF	#000000	##FFFFFF
##237AB2	1.00	4.67	4.50	4.67
#FFFFFF	4.67	1.00	21.00	1.00
#000000	4.50	21.00	1.00	21.00
##FFFFFF	4.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#607BB4

Deuteranopia (green-blind)

#4C6EB1

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #237ab2;
/* rgb */ color: rgb(35, 122, 178);
/* oklch */ color: oklch(55.6% 0.118 242.3);

Tailwind

colors: {
  custom: {
    50: '#75a0c9',
    500: '#237ab2',
    950: '#000000',
  },
}

SCSS

$custom: #237ab2;
$custom-light: #75a0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#237ab2",
  "rgb": {
    "r": 35,
    "g": 122,
    "b": 178
  },
  "hsl": {
    "h": 203.497,
    "s": 67.136,
    "l": 41.765
  },
  "oklch": {
    "l": 0.55618,
    "c": 0.11776,
    "h": 242.3
  },
  "luminance": 0.17491
}

Semantic roles & 50–950 ramp

primary

#237AB2

secondary

#C98E68

accent

#813EEA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #237AB2

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

Preview Lab → · Contrast checker → · Palette generator →