#237DB1#237DB1

#237DB1 is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.3% C 0.114 H 239.6°. Best body text is #000000 at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#237DB1
RGB	rgb(35, 125, 177)
HSL	hsl(202, 67%, 42%)
HSV	hsv(202, 80%, 69%)
CMYK	cmyk(80.2%, 29.4%, 0%, 30.6%)
CIE-LAB	lab(49.73, -7.49, -34.82)
CIE-LCH	lch(49.73, 35.61, 257.85°)
OKLab	oklab(56.29% -0.0578 -0.0986)
OKLCH	oklch(56.29% 0.114 239.6)
XYZ	xyz(15.9594, 18.1969, 44.2577)
Luminance	0.1820 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237DB1 #B15723

analogous

#23B19E #237DB1 #2336B1

triadic

#237DB1 #B1237D #7DB123

tetradic

#237DB1 #9E23B1 #B15723 #36B123

square

#237DB1 #9E23B1 #B15723 #36B123

split-complementary

#237DB1 #B12336 #B19E23

monochromatic

#0F354B #19597E #237DB1 #399ED8 #6CB7E2

Accessibility & contrast

On white

4.53

#237DB1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.64

#237DB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #237DB1

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237DB1	#FFFFFF	#000000	##000000
##237DB1	1.00	4.53	4.64	4.64
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.64	21.00	1.00	1.00
##000000	4.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647DB3

Deuteranopia (green-blind)

#5170B0

Tritanopia (blue-blind)

#008A8F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #237db1;
/* rgb */ color: rgb(35, 125, 177);
/* oklch */ color: oklch(56.3% 0.114 239.6);

Tailwind

colors: {
  custom: {
    50: '#75a2c8',
    500: '#237db1',
    950: '#000000',
  },
}

SCSS

$custom: #237db1;
$custom-light: #75a2c8;
$custom-dark: #000000;

JSON

{
  "hex": "#237db1",
  "rgb": {
    "r": 35,
    "g": 125,
    "b": 177
  },
  "hsl": {
    "h": 201.972,
    "s": 66.981,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56287,
    "c": 0.11429,
    "h": 239.6
  },
  "luminance": 0.18199
}

Semantic roles & 50–950 ramp

primary

#237DB1

secondary

#C88B68

accent

#7D3EEA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #237DB1

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

Preview Lab → · Contrast checker → · Palette generator →