#257D8A#257D8A

#257D8A is a mid, moderate teal. Relative luminance 0.169; OKLCH L 54.5% C 0.082 H 209.3°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#257D8A
RGB	rgb(37, 125, 138)
HSL	hsl(188, 58%, 34%)
HSV	hsv(188, 73%, 54%)
CMYK	cmyk(73.2%, 9.4%, 0%, 45.9%)
CIE-LAB	lab(48.13, -20.91, -14.52)
CIE-LCH	lch(48.13, 25.45, 214.77°)
OKLab	oklab(54.47% -0.0719 -0.0404)
OKLCH	oklch(54.47% 0.082 209.3)
XYZ	xyz(12.6820, 16.8940, 26.6323)
Luminance	0.1690 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257D8A #8A3225

analogous

#258A65 #257D8A #254B8A

triadic

#257D8A #8A257D #7D8A25

tetradic

#257D8A #65258A #8A3225 #4B8A25

square

#257D8A #65258A #8A3225 #4B8A25

split-complementary

#257D8A #8A254B #8A6525

monochromatic

#0B2629 #18515A #257D8A #32A9BA #57C2D2

Accessibility & contrast

On white

4.80

#257D8A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#257D8A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257D8A

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257D8A	#FFFFFF	#000000	##FFFFFF
##257D8A	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#71788B

Deuteranopia (green-blind)

#636E8A

Tritanopia (blue-blind)

#008381

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #257d8a;
/* rgb */ color: rgb(37, 125, 138);
/* oklch */ color: oklch(54.5% 0.082 209.3);

Tailwind

colors: {
  custom: {
    50: '#6fa3ac',
    500: '#257d8a',
    950: '#000000',
  },
}

SCSS

$custom: #257d8a;
$custom-light: #6fa3ac;
$custom-dark: #000000;

JSON

{
  "hex": "#257d8a",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 138
  },
  "hsl": {
    "h": 187.723,
    "s": 57.714,
    "l": 34.314
  },
  "oklch": {
    "l": 0.54468,
    "c": 0.08244,
    "h": 209.3
  },
  "luminance": 0.16896
}

Semantic roles & 50–950 ramp

primary

#257D8A

secondary

#B76154

accent

#5B47E1

background

#F7FAFA

surface

#EDF3F4

border

#C8CDCE

text

#080F10

muted

#7B7F7F

Preview Lab

Preview with #257D8A

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

Preview Lab → · Contrast checker → · Palette generator →