#1F5488#1F5488

#1F5488 is a dark, moderate cyan. Relative luminance 0.084; OKLCH L 43.8% C 0.102 H 251.0°. Best body text is #FFFFFF at 7.83:1 contrast (WCAG AA passes).

Color values

HEX	#1F5488
RGB	rgb(31, 84, 136)
HSL	hsl(210, 63%, 33%)
HSV	hsv(210, 77%, 53%)
CMYK	cmyk(77.2%, 38.2%, 0%, 46.7%)
CIE-LAB	lab(34.82, 1.68, -33.99)
CIE-LCH	lch(34.82, 34.03, 272.83°)
OKLab	oklab(43.79% -0.0333 -0.0968)
OKLCH	oklch(43.79% 0.102 251)
XYZ	xyz(8.1777, 8.4086, 24.4798)
Luminance	0.0841 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F5488 #88531F

analogous

#1F8887 #1F5488 #1F2088

triadic

#1F5488 #881F54 #54881F

tetradic

#1F5488 #871F88 #88531F #20881F

square

#1F5488 #871F88 #88531F #20881F

split-complementary

#1F5488 #881F20 #88871F

monochromatic

#081624 #143556 #1F5488 #2A73BA #4B91D6

Accessibility & contrast

On white

7.83

#1F5488 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.68

#1F5488 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F5488

7.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F5488	#FFFFFF	#000000	##FFFFFF
##1F5488	1.00	7.83	2.68	7.83
#FFFFFF	7.83	1.00	21.00	1.00
#000000	2.68	21.00	1.00	21.00
##FFFFFF	7.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C578A

Deuteranopia (green-blind)

#2C4D87

Tritanopia (blue-blind)

#006067

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1f5488;
/* rgb */ color: rgb(31, 84, 136);
/* oklch */ color: oklch(43.8% 0.102 251.0);

Tailwind

colors: {
  custom: {
    50: '#6a83ab',
    500: '#1f5488',
    950: '#000000',
  },
}

SCSS

$custom: #1f5488;
$custom-light: #6a83ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f5488",
  "rgb": {
    "r": 31,
    "g": 84,
    "b": 136
  },
  "hsl": {
    "h": 209.714,
    "s": 62.874,
    "l": 32.745
  },
  "oklch": {
    "l": 0.43793,
    "c": 0.10239,
    "h": 251
  },
  "luminance": 0.0841
}

Semantic roles & 50–950 ramp

primary

#1F5488

secondary

#B9814A

accent

#9342E6

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F5488

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

Preview Lab → · Contrast checker → · Palette generator →