#1F557E#1F557E

#1F557E is a dark, moderate cyan. Relative luminance 0.083; OKLCH L 43.4% C 0.088 H 245.0°. Best body text is #FFFFFF at 7.90:1 contrast (WCAG AA passes).

Color values

HEX	#1F557E
RGB	rgb(31, 85, 126)
HSL	hsl(206, 61%, 31%)
HSV	hsv(206, 75%, 49%)
CMYK	cmyk(75.4%, 32.5%, 0%, 50.6%)
CIE-LAB	lab(34.59, -2.85, -28.22)
CIE-LCH	lch(34.59, 28.36, 264.23°)
OKLab	oklab(43.43% -0.0373 -0.0799)
OKLCH	oklch(43.43% 0.088 245)
XYZ	xyz(7.5780, 8.2938, 20.9361)
Luminance	0.0829 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F557E #7E481F

analogous

#1F7E77 #1F557E #1F257E

triadic

#1F557E #7E1F55 #557E1F

tetradic

#1F557E #771F7E #7E481F #257E1F

square

#1F557E #771F7E #7E481F #257E1F

split-complementary

#1F557E #7E1F25 #7E771F

monochromatic

#07131C #13344D #1F557E #2B76AF #4695D1

Accessibility & contrast

On white

7.90

#1F557E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#1F557E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F557E

7.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F557E	#FFFFFF	#000000	##FFFFFF
##1F557E	1.00	7.90	2.66	7.90
#FFFFFF	7.90	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#425680

Deuteranopia (green-blind)

#354D7D

Tritanopia (blue-blind)

#005F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1f557e;
/* rgb */ color: rgb(31, 85, 126);
/* oklch */ color: oklch(43.4% 0.088 245.0);

Tailwind

colors: {
  custom: {
    50: '#6884a3',
    500: '#1f557e',
    950: '#000000',
  },
}

SCSS

$custom: #1f557e;
$custom-light: #6884a3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f557e",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 126
  },
  "hsl": {
    "h": 205.895,
    "s": 60.51,
    "l": 30.784
  },
  "oklch": {
    "l": 0.43431,
    "c": 0.0882,
    "h": 245
  },
  "luminance": 0.08295
}

Semantic roles & 50–950 ramp

primary

#1F557E

secondary

#B17548

accent

#8944E4

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1F557E

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

Preview Lab → · Contrast checker → · Palette generator →