#257A8B#257A8B

#257A8B is a mid, moderate cyan. Relative luminance 0.162; OKLCH L 53.7% C 0.082 H 214.0°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#257A8B
RGB	rgb(37, 122, 139)
HSL	hsl(190, 58%, 35%)
HSV	hsv(190, 73%, 55%)
CMYK	cmyk(73.4%, 12.2%, 0%, 45.5%)
CIE-LAB	lab(47.20, -18.97, -16.51)
CIE-LCH	lch(47.20, 25.15, 221.03°)
OKLab	oklab(53.74% -0.0683 -0.046)
OKLCH	oklch(53.74% 0.082 214)
XYZ	xyz(12.3807, 16.1750, 26.8907)
Luminance	0.1618 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257A8B #8B3625

analogous

#258B69 #257A8B #25478B

triadic

#257A8B #8B257A #7A8B25

tetradic

#257A8B #69258B #8B3625 #478B25

square

#257A8B #69258B #8B3625 #478B25

split-complementary

#257A8B #8B2547 #8B6925

monochromatic

#0B252A #18505B #257A8B #32A4BB #58BED3

Accessibility & contrast

On white

4.96

#257A8B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.24

#257A8B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #257A8B

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257A8B	#FFFFFF	#000000	##FFFFFF
##257A8B	1.00	4.96	4.24	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.24	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6E768C

Deuteranopia (green-blind)

#5F6B8B

Tritanopia (blue-blind)

#00817F

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #257a8b;
/* rgb */ color: rgb(37, 122, 139);
/* oklch */ color: oklch(53.7% 0.082 214.0);

Tailwind

colors: {
  custom: {
    50: '#6fa0ad',
    500: '#257a8b',
    950: '#000000',
  },
}

SCSS

$custom: #257a8b;
$custom-light: #6fa0ad;
$custom-dark: #000000;

JSON

{
  "hex": "#257a8b",
  "rgb": {
    "r": 37,
    "g": 122,
    "b": 139
  },
  "hsl": {
    "h": 190,
    "s": 57.955,
    "l": 34.51
  },
  "oklch": {
    "l": 0.53737,
    "c": 0.08232,
    "h": 214
  },
  "luminance": 0.16176
}

Semantic roles & 50–950 ramp

primary

#257A8B

secondary

#B76555

accent

#6047E1

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #257A8B

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

Preview Lab → · Contrast checker → · Palette generator →