#257CBC#257CBC

#257CBC is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 56.7% C 0.127 H 245.5°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#257CBC
RGB	rgb(37, 124, 188)
HSL	hsl(205, 67%, 44%)
HSV	hsv(205, 80%, 74%)
CMYK	cmyk(80.3%, 34%, 0%, 26.3%)
CIE-LAB	lab(50.02, -2.62, -40.70)
CIE-LCH	lch(50.02, 40.79, 266.31°)
OKLab	oklab(56.71% -0.0526 -0.1157)
OKLCH	oklch(56.71% 0.127 245.5)
XYZ	xyz(17.0442, 18.4374, 50.2277)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257CBC #BC6525

analogous

#25BCB1 #257CBC #2531BC

triadic

#257CBC #BC257C #7CBC25

tetradic

#257CBC #B125BC #BC6525 #31BC25

square

#257CBC #B125BC #BC6525 #31BC25

split-complementary

#257CBC #BC2531 #BCB125

monochromatic

#113956 #1B5A89 #257CBC #449BDA #77B6E4

Accessibility & contrast

On white

4.48

#257CBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#257CBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257CBC

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257CBC	#FFFFFF	#000000	##000000
##257CBC	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7FBF

Deuteranopia (green-blind)

#4871BB

Tritanopia (blue-blind)

#008C93

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #257cbc;
/* rgb */ color: rgb(37, 124, 188);
/* oklch */ color: oklch(56.7% 0.127 245.5);

Tailwind

colors: {
  custom: {
    50: '#78a1d0',
    500: '#257cbc',
    950: '#000000',
  },
}

SCSS

$custom: #257cbc;
$custom-light: #78a1d0;
$custom-dark: #000000;

JSON

{
  "hex": "#257cbc",
  "rgb": {
    "r": 37,
    "g": 124,
    "b": 188
  },
  "hsl": {
    "h": 205.43,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.56707,
    "c": 0.12716,
    "h": 245.5
  },
  "luminance": 0.18439
}

Semantic roles & 50–950 ramp

primary

#257CBC

secondary

#CC9771

accent

#873EEA

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0A0E14

muted

#7C7E82

Preview Lab

Preview with #257CBC

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

Preview Lab → · Contrast checker → · Palette generator →