#2577A9#2577A9

#2577A9 is a mid, moderate cyan. Relative luminance 0.165; OKLCH L 54.4% C 0.109 H 240.5°. Best body text is #FFFFFF at 4.89:1 contrast (WCAG AA passes).

Color values

HEX	#2577A9
RGB	rgb(37, 119, 169)
HSL	hsl(203, 64%, 40%)
HSV	hsv(203, 78%, 66%)
CMYK	cmyk(78.1%, 29.6%, 0%, 33.7%)
CIE-LAB	lab(47.56, -6.68, -33.58)
CIE-LCH	lch(47.56, 34.24, 258.74°)
OKLab	oklab(54.45% -0.0539 -0.095)
OKLCH	oklch(54.45% 0.109 240.5)
XYZ	xyz(14.5184, 16.4498, 39.9384)
Luminance	0.1645 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2577A9 #A95725

analogous

#25A999 #2577A9 #2535A9

triadic

#2577A9 #A92577 #77A925

tetradic

#2577A9 #9925A9 #A95725 #35A925

square

#2577A9 #9925A9 #A95725 #35A925

split-complementary

#2577A9 #A92535 #A99925

monochromatic

#0F3045 #1A5477 #2577A9 #3898D3 #6AB2DE

Accessibility & contrast

On white

4.89

#2577A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#2577A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2577A9

4.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2577A9	#FFFFFF	#000000	##FFFFFF
##2577A9	1.00	4.89	4.29	4.89
#FFFFFF	4.89	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6078AB

Deuteranopia (green-blind)

#4D6BA8

Tritanopia (blue-blind)

#008389

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #2577a9;
/* rgb */ color: rgb(37, 119, 169);
/* oklch */ color: oklch(54.4% 0.109 240.5);

Tailwind

colors: {
  custom: {
    50: '#749ec3',
    500: '#2577a9',
    950: '#000000',
  },
}

SCSS

$custom: #2577a9;
$custom-light: #749ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2577a9",
  "rgb": {
    "r": 37,
    "g": 119,
    "b": 169
  },
  "hsl": {
    "h": 202.727,
    "s": 64.078,
    "l": 40.392
  },
  "oklch": {
    "l": 0.54448,
    "c": 0.10925,
    "h": 240.5
  },
  "luminance": 0.16452
}

Semantic roles & 50–950 ramp

primary

#2577A9

secondary

#C48965

accent

#8041E7

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #2577A9

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

Preview Lab → · Contrast checker → · Palette generator →