#257EA6#257EA6

#257EA6 is a mid, moderate cyan. Relative luminance 0.181; OKLCH L 56.0% C 0.102 H 232.6°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#257EA6
RGB	rgb(37, 126, 166)
HSL	hsl(199, 64%, 40%)
HSV	hsv(199, 78%, 65%)
CMYK	cmyk(77.7%, 24.1%, 0%, 34.9%)
CIE-LAB	lab(49.58, -11.83, -28.68)
CIE-LCH	lch(49.58, 31.03, 247.58°)
OKLab	oklab(56.01% -0.0617 -0.0808)
OKLCH	oklch(56.01% 0.102 232.6)
XYZ	xyz(15.1040, 18.0664, 38.7601)
Luminance	0.1807 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EA6 #A64D25

analogous

#25A68E #257EA6 #253DA6

triadic

#257EA6 #A6257E #7EA625

tetradic

#257EA6 #8E25A6 #A64D25 #3DA625

square

#257EA6 #8E25A6 #A64D25 #3DA625

split-complementary

#257EA6 #A6253D #A68E25

monochromatic

#0F3242 #1A5874 #257EA6 #36A2D2 #68B9DD

Accessibility & contrast

On white

4.55

#257EA6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#257EA6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EA6

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EA6	#FFFFFF	#000000	##000000
##257EA6	1.00	4.55	4.61	4.61
#FFFFFF	4.55	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6A7DA8

Deuteranopia (green-blind)

#5970A5

Tritanopia (blue-blind)

#00898C

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257ea6;
/* rgb */ color: rgb(37, 126, 166);
/* oklch */ color: oklch(56.0% 0.102 232.6);

Tailwind

colors: {
  custom: {
    50: '#74a3c0',
    500: '#257ea6',
    950: '#000000',
  },
}

SCSS

$custom: #257ea6;
$custom-light: #74a3c0;
$custom-dark: #000000;

JSON

{
  "hex": "#257ea6",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 166
  },
  "hsl": {
    "h": 198.605,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.56007,
    "c": 0.10163,
    "h": 232.6
  },
  "luminance": 0.18068
}

Semantic roles & 50–950 ramp

primary

#257EA6

secondary

#C38164

accent

#7441E7

background

#F7FAFB

surface

#EEF3F7

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257EA6

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

Preview Lab → · Contrast checker → · Palette generator →