#2570B1#2570B1

#2570B1 is a mid, vivid cyan. Relative luminance 0.152; OKLCH L 53.2% C 0.125 H 248.9°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#2570B1
RGB	rgb(37, 112, 177)
HSL	hsl(208, 65%, 42%)
HSV	hsv(208, 79%, 69%)
CMYK	cmyk(79.1%, 36.7%, 0%, 30.6%)
CIE-LAB	lab(45.84, 0.53, -40.95)
CIE-LCH	lch(45.84, 40.96, 270.74°)
OKLab	oklab(53.23% -0.045 -0.1167)
OKLCH	oklch(53.23% 0.125 248.9)
XYZ	xyz(14.4899, 15.1542, 43.7478)
Luminance	0.1516 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2570B1 #B16625

analogous

#25B1AC #2570B1 #252AB1

triadic

#2570B1 #B12570 #70B125

tetradic

#2570B1 #AC25B1 #B16625 #2AB125

square

#2570B1 #AC25B1 #B16625 #2AB125

split-complementary

#2570B1 #B1252A #B1AC25

monochromatic

#10304C #1A507E #2570B1 #3D8FD6 #6FACE1

Accessibility & contrast

On white

5.21

#2570B1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#2570B1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2570B1

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2570B1	#FFFFFF	#000000	##FFFFFF
##2570B1	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5174B4

Deuteranopia (green-blind)

#3D67B0

Tritanopia (blue-blind)

#008088

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2570b1;
/* rgb */ color: rgb(37, 112, 177);
/* oklch */ color: oklch(53.2% 0.125 248.9);

Tailwind

colors: {
  custom: {
    50: '#7598c8',
    500: '#2570b1',
    950: '#000000',
  },
}

SCSS

$custom: #2570b1;
$custom-light: #7598c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2570b1",
  "rgb": {
    "r": 37,
    "g": 112,
    "b": 177
  },
  "hsl": {
    "h": 207.857,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.5323,
    "c": 0.12503,
    "h": 248.9
  },
  "luminance": 0.15156
}

Semantic roles & 50–950 ramp

primary

#2570B1

secondary

#C8966A

accent

#8E3FE8

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2570B1

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

Preview Lab → · Contrast checker → · Palette generator →