#257E8B#257E8B

#257E8B is a mid, moderate teal. Relative luminance 0.172; OKLCH L 54.8% C 0.083 H 209.2°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#257E8B
RGB	rgb(37, 126, 139)
HSL	hsl(188, 58%, 35%)
HSV	hsv(188, 73%, 55%)
CMYK	cmyk(73.4%, 9.4%, 0%, 45.5%)
CIE-LAB	lab(48.48, -21.11, -14.56)
CIE-LCH	lch(48.48, 25.65, 214.60°)
OKLab	oklab(54.77% -0.0725 -0.0405)
OKLCH	oklch(54.77% 0.083 209.2)
XYZ	xyz(12.8820, 17.1776, 27.0578)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257E8B #8B3225

analogous

#258B65 #257E8B #254B8B

triadic

#257E8B #8B257E #7E8B25

tetradic

#257E8B #65258B #8B3225 #4B8B25

square

#257E8B #65258B #8B3225 #4B8B25

split-complementary

#257E8B #8B254B #8B6525

monochromatic

#0B262A #18525B #257E8B #32AABB #58C3D3

Accessibility & contrast

On white

4.73

#257E8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#257E8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257E8B

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257E8B	#FFFFFF	#000000	##FFFFFF
##257E8B	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#72798C

Deuteranopia (green-blind)

#646F8B

Tritanopia (blue-blind)

#008482

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #257e8b;
/* rgb */ color: rgb(37, 126, 139);
/* oklch */ color: oklch(54.8% 0.083 209.2);

Tailwind

colors: {
  custom: {
    50: '#70a3ac',
    500: '#257e8b',
    950: '#000000',
  },
}

SCSS

$custom: #257e8b;
$custom-light: #70a3ac;
$custom-dark: #000000;

JSON

{
  "hex": "#257e8b",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 139
  },
  "hsl": {
    "h": 187.647,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.54768,
    "c": 0.08306,
    "h": 209.2
  },
  "luminance": 0.17179
}

Semantic roles & 50–950 ramp

primary

#257E8B

secondary

#B76155

accent

#5A47E1

background

#F7FAFA

surface

#EDF4F4

border

#C8CECE

text

#080F10

muted

#7B7F7F

Preview Lab

Preview with #257E8B

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

Preview Lab → · Contrast checker → · Palette generator →