#257BBD#257BBD

#257BBD is a mid, vivid cyan. Relative luminance 0.182; OKLCH L 56.5% C 0.129 H 246.5°. Best body text is #000000 at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#257BBD
RGB	rgb(37, 123, 189)
HSL	hsl(206, 67%, 44%)
HSV	hsv(206, 80%, 74%)
CMYK	cmyk(80.4%, 34.9%, 0%, 25.9%)
CIE-LAB	lab(49.78, -1.65, -41.67)
CIE-LCH	lch(49.78, 41.70, 267.73°)
OKLab	oklab(56.53% -0.0515 -0.1186)
OKLCH	oklch(56.53% 0.129 246.5)
XYZ	xyz(17.0277, 18.2313, 50.7558)
Luminance	0.1823 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257BBD #BD6725

analogous

#25BDB3 #257BBD #252FBD

triadic

#257BBD #BD257B #7BBD25

tetradic

#257BBD #B325BD #BD6725 #2FBD25

square

#257BBD #B325BD #BD6725 #2FBD25

split-complementary

#257BBD #BD252F #BDB325

monochromatic

#113857 #1B5A8A #257BBD #4599DB #78B5E5

Accessibility & contrast

On white

4.52

#257BBD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.65

#257BBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257BBD

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257BBD	#FFFFFF	#000000	##000000
##257BBD	1.00	4.52	4.65	4.65
#FFFFFF	4.52	1.00	21.00	21.00
#000000	4.65	21.00	1.00	1.00
##000000	4.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7EC0

Deuteranopia (green-blind)

#4670BC

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257bbd;
/* rgb */ color: rgb(37, 123, 189);
/* oklch */ color: oklch(56.5% 0.129 246.5);

Tailwind

colors: {
  custom: {
    50: '#78a0d1',
    500: '#257bbd',
    950: '#000000',
  },
}

SCSS

$custom: #257bbd;
$custom-light: #78a0d1;
$custom-dark: #000000;

JSON

{
  "hex": "#257bbd",
  "rgb": {
    "r": 37,
    "g": 123,
    "b": 189
  },
  "hsl": {
    "h": 206.053,
    "s": 67.257,
    "l": 44.314
  },
  "oklch": {
    "l": 0.56529,
    "c": 0.12928,
    "h": 246.5
  },
  "luminance": 0.18233
}

Semantic roles & 50–950 ramp

primary

#257BBD

secondary

#CC9972

accent

#893EEA

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #257BBD

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

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