#257FBC#257FBC

#257FBC is a mid, vivid cyan. Relative luminance 0.192; OKLCH L 57.4% C 0.125 H 243.6°. Best body text is #000000 at 4.84:1 contrast (WCAG AA passes).

Color values

HEX	#257FBC
RGB	rgb(37, 127, 188)
HSL	hsl(204, 67%, 44%)
HSV	hsv(204, 80%, 74%)
CMYK	cmyk(80.3%, 32.4%, 0%, 26.3%)
CIE-LAB	lab(50.92, -4.41, -39.28)
CIE-LCH	lch(50.92, 39.53, 263.60°)
OKLab	oklab(57.42% -0.0553 -0.1116)
OKLCH	oklch(57.42% 0.125 243.6)
XYZ	xyz(17.4259, 19.2008, 50.3549)
Luminance	0.1920 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257FBC #BC6225

analogous

#25BCAE #257FBC #2534BC

triadic

#257FBC #BC257F #7FBC25

tetradic

#257FBC #AE25BC #BC6225 #34BC25

square

#257FBC #AE25BC #BC6225 #34BC25

split-complementary

#257FBC #BC2534 #BCAE25

monochromatic

#113A56 #1B5C89 #257FBC #449EDA #77B8E4

Accessibility & contrast

On white

4.34

#257FBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.84

#257FBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257FBC

4.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257FBC	#FFFFFF	#000000	##000000
##257FBC	1.00	4.34	4.84	4.84
#FFFFFF	4.34	1.00	21.00	21.00
#000000	4.84	21.00	1.00	1.00
##000000	4.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6281BF

Deuteranopia (green-blind)

#4D73BB

Tritanopia (blue-blind)

#008E95

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #257fbc;
/* rgb */ color: rgb(37, 127, 188);
/* oklch */ color: oklch(57.4% 0.125 243.6);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#257fbc",
  "rgb": {
    "r": 37,
    "g": 127,
    "b": 188
  },
  "hsl": {
    "h": 204.238,
    "s": 67.111,
    "l": 44.118
  },
  "oklch": {
    "l": 0.57416,
    "c": 0.12454,
    "h": 243.6
  },
  "luminance": 0.19203
}

Semantic roles & 50–950 ramp

primary

#257FBC

secondary

#CC9671

accent

#833EEA

background

#F8FAFC

surface

#EFF3F9

border

#CACDD2

text

#0A0F14

muted

#7C7F82

Preview Lab

Preview with #257FBC

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

Preview Lab → · Contrast checker → · Palette generator →