#1F558D#1F558D

#1F558D is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.4% C 0.108 H 252.3°. Best body text is #FFFFFF at 7.66:1 contrast (WCAG AA passes).

Color values

HEX	#1F558D
RGB	rgb(31, 85, 141)
HSL	hsl(211, 64%, 34%)
HSV	hsv(211, 78%, 55%)
CMYK	cmyk(78%, 39.7%, 0%, 44.7%)
CIE-LAB	lab(35.42, 3.00, -36.09)
CIE-LCH	lch(35.42, 36.21, 274.75°)
OKLab	oklab(44.36% -0.0329 -0.103)
OKLCH	oklch(44.36% 0.108 252.3)
XYZ	xyz(8.6195, 8.7104, 26.4211)
Luminance	0.0871 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F558D #8D571F

analogous

#1F8C8D #1F558D #201F8D

triadic

#1F558D #8D1F55 #558D1F

tetradic

#1F558D #8D1F8C #8D571F #1F8D20

square

#1F558D #8D1F8C #8D571F #1F8D20

split-complementary

#1F558D #8D201F #8C8D1F

monochromatic

#091929 #14375B #1F558D #2A73BF #4E92D8

Accessibility & contrast

On white

7.66

#1F558D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.74

#1F558D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F558D

7.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F558D	#FFFFFF	#000000	##FFFFFF
##1F558D	1.00	7.66	2.74	7.66
#FFFFFF	7.66	1.00	21.00	1.00
#000000	2.74	21.00	1.00	21.00
##FFFFFF	7.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B598F

Deuteranopia (green-blind)

#294F8C

Tritanopia (blue-blind)

#00626A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f558d;
/* rgb */ color: rgb(31, 85, 141);
/* oklch */ color: oklch(44.4% 0.108 252.3);

Tailwind

colors: {
  custom: {
    50: '#6b84af',
    500: '#1f558d',
    950: '#000000',
  },
}

SCSS

$custom: #1f558d;
$custom-light: #6b84af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f558d",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 141
  },
  "hsl": {
    "h": 210.545,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.44358,
    "c": 0.10809,
    "h": 252.3
  },
  "luminance": 0.08711
}

Semantic roles & 50–950 ramp

primary

#1F558D

secondary

#BB854D

accent

#9541E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F558D

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

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