#257EA3#257EA3

#257EA3 is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 55.9% C 0.099 H 230.6°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#257EA3
RGB	rgb(37, 126, 163)
HSL	hsl(198, 63%, 39%)
HSV	hsv(198, 77%, 64%)
CMYK	cmyk(77.3%, 22.7%, 0%, 36.1%)
CIE-LAB	lab(49.44, -12.90, -27.14)
CIE-LCH	lch(49.44, 30.05, 244.58°)
OKLab	oklab(55.86% -0.0628 -0.0763)
OKLCH	oklch(55.86% 0.099 230.6)
XYZ	xyz(14.8320, 17.9576, 37.3277)
Luminance	0.1796 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EA3 #A34A25

analogous

#25A389 #257EA3 #253FA3

triadic

#257EA3 #A3257E #7EA325

tetradic

#257EA3 #8925A3 #A34A25 #3FA325

square

#257EA3 #8925A3 #A34A25 #3FA325

split-complementary

#257EA3 #A3253F #A38925

monochromatic

#0E313F #1A5771 #257EA3 #34A3D1 #66BADC

Accessibility & contrast

On white

4.57

#257EA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#257EA3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EA3

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EA3	#FFFFFF	#000000	##000000
##257EA3	1.00	4.57	4.59	4.59
#FFFFFF	4.57	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6B7CA5

Deuteranopia (green-blind)

#5A70A2

Tritanopia (blue-blind)

#00888A

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257ea3;
/* rgb */ color: rgb(37, 126, 163);
/* oklch */ color: oklch(55.9% 0.099 230.6);

Tailwind

colors: {
  custom: {
    50: '#73a3be',
    500: '#257ea3',
    950: '#000000',
  },
}

SCSS

$custom: #257ea3;
$custom-light: #73a3be;
$custom-dark: #000000;

JSON

{
  "hex": "#257ea3",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 163
  },
  "hsl": {
    "h": 197.619,
    "s": 63,
    "l": 39.216
  },
  "oklch": {
    "l": 0.55858,
    "c": 0.09884,
    "h": 230.6
  },
  "luminance": 0.17959
}

Semantic roles & 50–950 ramp

primary

#257EA3

secondary

#C27E62

accent

#7242E6

background

#F7FAFB

surface

#EEF3F6

border

#C9CDD0

text

#090F12

muted

#7B7F81

Preview Lab

Preview with #257EA3

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

Preview Lab → · Contrast checker → · Palette generator →