#2570B0#2570B0

#2570B0 is a mid, vivid cyan. Relative luminance 0.151; OKLCH L 53.2% C 0.124 H 248.6°. Best body text is #FFFFFF at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#2570B0
RGB	rgb(37, 112, 176)
HSL	hsl(208, 65%, 42%)
HSV	hsv(208, 79%, 69%)
CMYK	cmyk(79%, 36.4%, 0%, 31%)
CIE-LAB	lab(45.79, 0.15, -40.45)
CIE-LCH	lch(45.79, 40.45, 270.22°)
OKLab	oklab(53.17% -0.0452 -0.1152)
OKLCH	oklch(53.17% 0.124 248.6)
XYZ	xyz(14.3906, 15.1145, 43.2248)
Luminance	0.1512 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2570B0 #B06525

analogous

#25B0AB #2570B0 #252BB0

triadic

#2570B0 #B02570 #70B025

tetradic

#2570B0 #AB25B0 #B06525 #2BB025

square

#2570B0 #AB25B0 #B06525 #2BB025

split-complementary

#2570B0 #B0252B #B0AB25

monochromatic

#10304B #1A507D #2570B0 #3C8FD6 #6FACE1

Accessibility & contrast

On white

5.22

#2570B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.02

#2570B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2570B0

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2570B0	#FFFFFF	#000000	##FFFFFF
##2570B0	1.00	5.22	4.02	5.22
#FFFFFF	5.22	1.00	21.00	1.00
#000000	4.02	21.00	1.00	21.00
##FFFFFF	5.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5273B3

Deuteranopia (green-blind)

#3D67AF

Tritanopia (blue-blind)

#007F87

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #2570b0;
/* rgb */ color: rgb(37, 112, 176);
/* oklch */ color: oklch(53.2% 0.124 248.6);

Tailwind

colors: {
  custom: {
    50: '#7598c8',
    500: '#2570b0',
    950: '#000000',
  },
}

SCSS

$custom: #2570b0;
$custom-light: #7598c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2570b0",
  "rgb": {
    "r": 37,
    "g": 112,
    "b": 176
  },
  "hsl": {
    "h": 207.626,
    "s": 65.258,
    "l": 41.765
  },
  "oklch": {
    "l": 0.5317,
    "c": 0.12378,
    "h": 248.6
  },
  "luminance": 0.15116
}

Semantic roles & 50–950 ramp

primary

#2570B0

secondary

#C7956A

accent

#8D40E8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2570B0

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

Preview Lab → · Contrast checker → · Palette generator →