#1F5999#1F5999

#1F5999 is a mid, moderate cyan. Relative luminance 0.097; OKLCH L 46.1% C 0.120 H 253.7°. Best body text is #FFFFFF at 7.13:1 contrast (WCAG AA passes).

Color values

HEX	#1F5999
RGB	rgb(31, 89, 153)
HSL	hsl(211, 66%, 36%)
HSV	hsv(211, 80%, 60%)
CMYK	cmyk(79.7%, 41.8%, 0%, 40%)
CIE-LAB	lab(37.36, 5.13, -40.26)
CIE-LCH	lch(37.36, 40.58, 277.26°)
OKLab	oklab(46.1% -0.0336 -0.1151)
OKLCH	oklch(46.1% 0.12 253.7)
XYZ	xyz(9.8851, 9.7348, 31.4888)
Luminance	0.0974 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5999 #995F1F

analogous

#1F9699 #1F5999 #221F99

triadic

#1F5999 #991F59 #59991F

tetradic

#1F5999 #991F96 #995F1F #1F9922

square

#1F5999 #991F96 #995F1F #1F9922

split-complementary

#1F5999 #99221F #96991F

monochromatic

#0A1E33 #153B66 #1F5999 #2977CC #5696DD

Accessibility & contrast

On white

7.13

#1F5999 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.95

#1F5999 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5999

7.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5999	#FFFFFF	#000000	##FFFFFF
##1F5999	1.00	7.13	2.95	7.13
#FFFFFF	7.13	1.00	21.00	1.00
#000000	2.95	21.00	1.00	21.00
##FFFFFF	7.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3A5E9C

Deuteranopia (green-blind)

#255398

Tritanopia (blue-blind)

#006871

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #1f5999;
/* rgb */ color: rgb(31, 89, 153);
/* oklch */ color: oklch(46.1% 0.120 253.7);

Tailwind

colors: {
  custom: {
    50: '#6e87b7',
    500: '#1f5999',
    950: '#000000',
  },
}

SCSS

$custom: #1f5999;
$custom-light: #6e87b7;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5999",
  "rgb": {
    "r": 31,
    "g": 89,
    "b": 153
  },
  "hsl": {
    "h": 211.475,
    "s": 66.304,
    "l": 36.078
  },
  "oklch": {
    "l": 0.46104,
    "c": 0.11992,
    "h": 253.7
  },
  "luminance": 0.09736
}

Semantic roles & 50–950 ramp

primary

#1F5999

secondary

#C08D54

accent

#983FE9

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B11

muted

#7B7C80

Preview Lab

Preview with #1F5999

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

Preview Lab → · Contrast checker → · Palette generator →