#257E8A#257E8A

#257E8A is a mid, moderate teal. Relative luminance 0.172; OKLCH L 54.7% C 0.083 H 208.1°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#257E8A
RGB	rgb(37, 126, 138)
HSL	hsl(187, 58%, 34%)
HSV	hsv(187, 73%, 54%)
CMYK	cmyk(73.2%, 8.7%, 0%, 45.9%)
CIE-LAB	lab(48.45, -21.44, -14.03)
CIE-LCH	lch(48.45, 25.62, 213.20°)
OKLab	oklab(54.73% -0.073 -0.039)
OKLCH	oklch(54.73% 0.083 208.1)
XYZ	xyz(12.8093, 17.1485, 26.6747)
Luminance	0.1715 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257E8A #8A3125

analogous

#258A64 #257E8A #254C8A

triadic

#257E8A #8A257E #7E8A25

tetradic

#257E8A #64258A #8A3125 #4C8A25

square

#257E8A #64258A #8A3125 #4C8A25

split-complementary

#257E8A #8A254C #8A6425

monochromatic

#0B2629 #18525A #257E8A #32AABA #57C3D2

Accessibility & contrast

On white

4.74

#257E8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#257E8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257E8A

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257E8A	#FFFFFF	#000000	##FFFFFF
##257E8A	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#73798B

Deuteranopia (green-blind)

#646F8A

Tritanopia (blue-blind)

#008482

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #257e8a;
/* rgb */ color: rgb(37, 126, 138);
/* oklch */ color: oklch(54.7% 0.083 208.1);

Tailwind

colors: {
  custom: {
    50: '#6fa3ac',
    500: '#257e8a',
    950: '#000000',
  },
}

SCSS

$custom: #257e8a;
$custom-light: #6fa3ac;
$custom-dark: #000000;

JSON

{
  "hex": "#257e8a",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 138
  },
  "hsl": {
    "h": 187.129,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.54727,
    "c": 0.08273,
    "h": 208.1
  },
  "luminance": 0.1715
}

Semantic roles & 50–950 ramp

primary

#257E8A

secondary

#B76054

accent

#5947E1

background

#F7FAFA

surface

#EDF4F4

border

#C8CECE

text

#080F10

muted

#7B7F7F

Preview Lab

Preview with #257E8A

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

Preview Lab → · Contrast checker → · Palette generator →