#257ED4#257ED4

#257ED4 is a mid, vivid cyan. Relative luminance 0.201; OKLCH L 58.6% C 0.155 H 251.9°. Best body text is #000000 at 5.01:1 contrast (WCAG AA passes).

Color values

HEX	#257ED4
RGB	rgb(37, 126, 212)
HSL	hsl(209, 70%, 49%)
HSV	hsv(209, 83%, 83%)
CMYK	cmyk(82.5%, 40.6%, 0%, 16.9%)
CIE-LAB	lab(51.91, 5.18, -51.39)
CIE-LCH	lch(51.91, 51.65, 275.76°)
OKLab	oklab(58.61% -0.0481 -0.147)
OKLCH	oklch(58.61% 0.155 251.9)
XYZ	xyz(20.1030, 20.0660, 65.0882)
Luminance	0.2007 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#257ED4 #D47B25

analogous

#25D4D3 #257ED4 #2526D4

triadic

#257ED4 #D4257E #7ED425

tetradic

#257ED4 #D325D4 #D47B25 #26D425

square

#257ED4 #D325D4 #D47B25 #26D425

split-complementary

#257ED4 #D42526 #D4D325

monochromatic

#13406C #1C5FA0 #257ED4 #559CE1 #89BBEA

Accessibility & contrast

On white

4.19

#257ED4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.01

#257ED4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #257ED4

5.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##257ED4	#FFFFFF	#000000	##000000
##257ED4	1.00	4.19	5.01	5.01
#FFFFFF	4.19	1.00	21.00	21.00
#000000	5.01	21.00	1.00	1.00
##000000	5.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5384D7

Deuteranopia (green-blind)

#3675D2

Tritanopia (blue-blind)

#00939F

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #257ed4;
/* rgb */ color: rgb(37, 126, 212);
/* oklch */ color: oklch(58.6% 0.155 251.9);

Tailwind

colors: {
  custom: {
    50: '#7da2e2',
    500: '#257ed4',
    950: '#000000',
  },
}

SCSS

$custom: #257ed4;
$custom-light: #7da2e2;
$custom-dark: #000000;

JSON

{
  "hex": "#257ed4",
  "rgb": {
    "r": 37,
    "g": 126,
    "b": 212
  },
  "hsl": {
    "h": 209.486,
    "s": 70.281,
    "l": 48.824
  },
  "oklch": {
    "l": 0.58613,
    "c": 0.15472,
    "h": 251.9
  },
  "luminance": 0.20068
}

Semantic roles & 50–950 ramp

primary

#257ED4

secondary

#D4AA81

accent

#923BED

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0B0F15

muted

#7C7E83

Preview Lab

Preview with #257ED4

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

Preview Lab → · Contrast checker → · Palette generator →