#257EBC#257EBC

#257EBC is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.2% C 0.125 H 244.3°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#257EBC
RGB	rgb(37, 126, 188)
HSL	hsl(205, 67%, 44%)
HSV	hsv(205, 80%, 74%)
CMYK	cmyk(80.3%, 33%, 0%, 26.3%)
CIE-LAB	lab(50.62, -3.81, -39.76)
CIE-LCH	lch(50.62, 39.94, 264.52°)
OKLab	oklab(57.18% -0.0544 -0.1129)
OKLCH	oklch(57.18% 0.125 244.3)
XYZ	xyz(17.2974, 18.9437, 50.3121)
Luminance	0.1895 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257EBC #BC6325

analogous

#25BCAF #257EBC #2532BC

triadic

#257EBC #BC257E #7EBC25

tetradic

#257EBC #AF25BC #BC6325 #32BC25

square

#257EBC #AF25BC #BC6325 #32BC25

split-complementary

#257EBC #BC2532 #BCAF25

monochromatic

#113956 #1B5C89 #257EBC #449DDA #77B7E4

Accessibility & contrast

On white

4.38

#257EBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#257EBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257EBC

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257EBC	#FFFFFF	#000000	##000000
##257EBC	1.00	4.38	4.79	4.79
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6180BF

Deuteranopia (green-blind)

#4C72BB

Tritanopia (blue-blind)

#008D94

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #257ebc;
/* rgb */ color: rgb(37, 126, 188);
/* oklch */ color: oklch(57.2% 0.125 244.3);

Tailwind

colors: {
  custom: {
    50: '#78a3d0',
    500: '#257ebc',
    950: '#000000',
  },
}

SCSS

$custom: #257ebc;
$custom-light: #78a3d0;
$custom-dark: #000000;

JSON

{
  "hex": "#257ebc",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 188
  },
  "hsl": {
    "h": 204.636,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.57179,
    "c": 0.12539,
    "h": 244.3
  },
  "luminance": 0.18946
}

Semantic roles & 50–950 ramp

primary

#257EBC

secondary

#CC9671

accent

#853EEA

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #257EBC

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

Preview Lab → · Contrast checker → · Palette generator →