#257DAF#257DAF

#257DAF is a mid, moderate cyan. Relative luminance 0.182; OKLCH L 56.2% C 0.111 H 238.9°. Best body text is #000000 at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#257DAF
RGB	rgb(37, 125, 175)
HSL	hsl(202, 65%, 42%)
HSV	hsv(202, 79%, 69%)
CMYK	cmyk(78.9%, 28.6%, 0%, 31.4%)
CIE-LAB	lab(49.68, -8.01, -33.74)
CIE-LCH	lch(49.68, 34.68, 256.65°)
OKLab	oklab(56.23% -0.0576 -0.0954)
OKLCH	oklch(56.23% 0.111 238.9)
XYZ	xyz(15.8314, 18.1538, 43.2188)
Luminance	0.1816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257DAF #AF5725

analogous

#25AF9C #257DAF #2538AF

triadic

#257DAF #AF257D #7DAF25

tetradic

#257DAF #9C25AF #AF5725 #38AF25

square

#257DAF #9C25AF #AF5725 #38AF25

split-complementary

#257DAF #AF2538 #AF9C25

monochromatic

#10354A #1A597C #257DAF #3C9ED6 #6EB7E0

Accessibility & contrast

On white

4.53

#257DAF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.63

#257DAF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257DAF

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257DAF	#FFFFFF	#000000	##000000
##257DAF	1.00	4.53	4.63	4.63
#FFFFFF	4.53	1.00	21.00	21.00
#000000	4.63	21.00	1.00	1.00
##000000	4.63	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657DB1

Deuteranopia (green-blind)

#5370AE

Tritanopia (blue-blind)

#008A8E

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #257daf;
/* rgb */ color: rgb(37, 125, 175);
/* oklch */ color: oklch(56.2% 0.111 238.9);

Tailwind

colors: {
  custom: {
    50: '#75a2c7',
    500: '#257daf',
    950: '#000000',
  },
}

SCSS

$custom: #257daf;
$custom-light: #75a2c7;
$custom-dark: #000000;

JSON

{
  "hex": "#257daf",
  "rgb": {
    "r": 37,
    "g": 125,
    "b": 175
  },
  "hsl": {
    "h": 201.739,
    "s": 65.094,
    "l": 41.569
  },
  "oklch": {
    "l": 0.56227,
    "c": 0.11147,
    "h": 238.9
  },
  "luminance": 0.18156
}

Semantic roles & 50–950 ramp

primary

#257DAF

secondary

#C78B69

accent

#7D40E8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0F13

muted

#7C7E82

Preview Lab

Preview with #257DAF

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

Preview Lab → · Contrast checker → · Palette generator →