#1F5577#1F5577

#1F5577 is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.0% C 0.080 H 240.1°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#1F5577
RGB	rgb(31, 85, 119)
HSL	hsl(203, 59%, 29%)
HSV	hsv(203, 74%, 47%)
CMYK	cmyk(73.9%, 28.6%, 0%, 53.3%)
CIE-LAB	lab(34.23, -5.52, -24.45)
CIE-LCH	lch(34.23, 25.06, 257.28°)
OKLab	oklab(43.03% -0.0397 -0.069)
OKLCH	oklch(43.03% 0.08 240.1)
XYZ	xyz(7.1421, 8.1194, 18.6400)
Luminance	0.0812 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5577 #77411F

analogous

#1F776D #1F5577 #1F2977

triadic

#1F5577 #771F55 #55771F

tetradic

#1F5577 #6D1F77 #77411F #29771F

square

#1F5577 #6D1F77 #77411F #29771F

split-complementary

#1F5577 #771F29 #776D1F

monochromatic

#061118 #123246 #1F5577 #2C78A8 #4398CE

Accessibility & contrast

On white

8.00

#1F5577 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#1F5577 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5577

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5577	#FFFFFF	#000000	##FFFFFF
##1F5577	1.00	8.00	2.62	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#455579

Deuteranopia (green-blind)

#394D76

Tritanopia (blue-blind)

#005E61

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1f5577;
/* rgb */ color: rgb(31, 85, 119);
/* oklch */ color: oklch(43.0% 0.080 240.1);

Tailwind

colors: {
  custom: {
    50: '#67849e',
    500: '#1f5577',
    950: '#000000',
  },
}

SCSS

$custom: #1f5577;
$custom-light: #67849e;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5577",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 119
  },
  "hsl": {
    "h": 203.182,
    "s": 58.667,
    "l": 29.412
  },
  "oklch": {
    "l": 0.43032,
    "c": 0.07957,
    "h": 240.1
  },
  "luminance": 0.0812
}

Semantic roles & 50–950 ramp

primary

#1F5577

secondary

#AB6E47

accent

#8246E2

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #1F5577

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

Preview Lab → · Contrast checker → · Palette generator →