#1F558E#1F558E

#1F558E is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 44.4% C 0.109 H 252.6°. Best body text is #FFFFFF at 7.64:1 contrast (WCAG AA passes).

Color values

HEX	#1F558E
RGB	rgb(31, 85, 142)
HSL	hsl(211, 64%, 34%)
HSV	hsv(211, 78%, 56%)
CMYK	cmyk(78.2%, 40.1%, 0%, 44.3%)
CIE-LAB	lab(35.48, 3.39, -36.61)
CIE-LCH	lch(35.48, 36.76, 275.29°)
OKLab	oklab(44.42% -0.0327 -0.1045)
OKLCH	oklch(44.42% 0.109 252.6)
XYZ	xyz(8.6942, 8.7403, 26.8148)
Luminance	0.0874 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F558E #8E581F

analogous

#1F8D8E #1F558E #211F8E

triadic

#1F558E #8E1F55 #558E1F

tetradic

#1F558E #8E1F8D #8E581F #1F8E21

square

#1F558E #8E1F8D #8E581F #1F8E21

split-complementary

#1F558E #8E211F #8D8E1F

monochromatic

#09192A #14375C #1F558E #2A73C0 #4F92D9

Accessibility & contrast

On white

7.64

#1F558E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#1F558E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F558E

7.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F558E	#FFFFFF	#000000	##FFFFFF
##1F558E	1.00	7.64	2.75	7.64
#FFFFFF	7.64	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5990

Deuteranopia (green-blind)

#284F8D

Tritanopia (blue-blind)

#00626A

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1f558e;
/* rgb */ color: rgb(31, 85, 142);
/* oklch */ color: oklch(44.4% 0.109 252.6);

Tailwind

colors: {
  custom: {
    50: '#6c84af',
    500: '#1f558e',
    950: '#000000',
  },
}

SCSS

$custom: #1f558e;
$custom-light: #6c84af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f558e",
  "rgb": {
    "r": 31,
    "g": 85,
    "b": 142
  },
  "hsl": {
    "h": 210.811,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.44423,
    "c": 0.10946,
    "h": 252.6
  },
  "luminance": 0.08741
}

Semantic roles & 50–950 ramp

primary

#1F558E

secondary

#BB864D

accent

#9641E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F558E

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

Preview Lab → · Contrast checker → · Palette generator →