#257CB2#257CB2

#257CB2 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.1% C 0.116 H 241.2°. Best body text is #000000 at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#257CB2
RGB	rgb(37, 124, 178)
HSL	hsl(203, 66%, 42%)
HSV	hsv(203, 79%, 70%)
CMYK	cmyk(79.2%, 30.3%, 0%, 30.2%)
CIE-LAB	lab(49.52, -6.32, -35.73)
CIE-LCH	lch(49.52, 36.28, 259.96°)
OKLab	oklab(56.15% -0.0557 -0.1012)
OKLCH	oklch(56.15% 0.116 241.2)
XYZ	xyz(16.0033, 18.0210, 44.7458)
Luminance	0.1802 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CB2 #B25B25

analogous

#25B2A2 #257CB2 #2535B2

triadic

#257CB2 #B2257C #7CB225

tetradic

#257CB2 #A225B2 #B25B25 #35B225

square

#257CB2 #A225B2 #B25B25 #35B225

split-complementary

#257CB2 #B22535 #B2A225

monochromatic

#10354D #1A597F #257CB2 #3D9CD7 #70B6E1

Accessibility & contrast

On white

4.56

#257CB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.60

#257CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257CB2

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CB2	#FFFFFF	#000000	##000000
##257CB2	1.00	4.56	4.60	4.60
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.60	21.00	1.00	1.00
##000000	4.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB4

Deuteranopia (green-blind)

#4F70B1

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257cb2;
/* rgb */ color: rgb(37, 124, 178);
/* oklch */ color: oklch(56.1% 0.116 241.2);

Tailwind

colors: {
  custom: {
    50: '#76a1c9',
    500: '#257cb2',
    950: '#000000',
  },
}

SCSS

$custom: #257cb2;
$custom-light: #76a1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#257cb2",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 178
  },
  "hsl": {
    "h": 202.979,
    "s": 65.581,
    "l": 42.157
  },
  "oklch": {
    "l": 0.56147,
    "c": 0.11554,
    "h": 241.2
  },
  "luminance": 0.18023
}

Semantic roles & 50–950 ramp

primary

#257CB2

secondary

#C88E6B

accent

#803FE9

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #257CB2

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

Preview Lab → · Contrast checker → · Palette generator →