#1F588D#1F588D

#1F588D is a mid, moderate cyan. Relative luminance 0.092; OKLCH L 45.1% C 0.105 H 250.0°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX	#1F588D
RGB	rgb(31, 88, 141)
HSL	hsl(209, 64%, 34%)
HSV	hsv(209, 78%, 55%)
CMYK	cmyk(78%, 37.6%, 0%, 44.7%)
CIE-LAB	lab(36.35, 1.06, -34.61)
CIE-LCH	lch(36.35, 34.63, 271.75°)
OKLab	oklab(45.09% -0.0358 -0.0986)
OKLCH	oklch(45.09% 0.105 250)
XYZ	xyz(8.8607, 9.1928, 26.5015)
Luminance	0.0919 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F588D #8D541F

analogous

#1F8D8B #1F588D #1F218D

triadic

#1F588D #8D1F58 #588D1F

tetradic

#1F588D #8B1F8D #8D541F #218D1F

square

#1F588D #8B1F8D #8D541F #218D1F

split-complementary

#1F588D #8D1F21 #8D8B1F

monochromatic

#091929 #14395B #1F588D #2A77BF #4E96D8

Accessibility & contrast

On white

7.40

#1F588D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.84

#1F588D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F588D

7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F588D	#FFFFFF	#000000	##FFFFFF
##1F588D	1.00	7.40	2.84	7.40
#FFFFFF	7.40	1.00	21.00	1.00
#000000	2.84	21.00	1.00	21.00
##FFFFFF	7.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5B8F

Deuteranopia (green-blind)

#2F518C

Tritanopia (blue-blind)

#00656B

Achromatopsia (no color)

#555555

Design tokens & code

CSS

--color: #1f588d;
/* rgb */ color: rgb(31, 88, 141);
/* oklch */ color: oklch(45.1% 0.105 250.0);

Tailwind

colors: {
  custom: {
    50: '#6b86ae',
    500: '#1f588d',
    950: '#000000',
  },
}

SCSS

$custom: #1f588d;
$custom-light: #6b86ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1f588d",
  "rgb": {
    "r": 31,
    "g": 88,
    "b": 141
  },
  "hsl": {
    "h": 208.909,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.45087,
    "c": 0.10486,
    "h": 250
  },
  "luminance": 0.09194
}

Semantic roles & 50–950 ramp

primary

#1F588D

secondary

#BB824D

accent

#9141E7

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#080B10

muted

#7A7C7F

Preview Lab

Preview with #1F588D

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

Preview Lab → · Contrast checker → · Palette generator →