#1F508A#1F508A

#1F508A is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 43.0% C 0.110 H 254.7°. Best body text is #FFFFFF at 8.16:1 contrast (WCAG AA passes).

Color values

HEX	#1F508A
RGB	rgb(31, 80, 138)
HSL	hsl(213, 63%, 33%)
HSV	hsv(213, 78%, 54%)
CMYK	cmyk(77.5%, 42%, 0%, 45.9%)
CIE-LAB	lab(33.70, 5.10, -37.01)
CIE-LCH	lch(33.70, 37.36, 277.84°)
OKLab	oklab(42.95% -0.0289 -0.1057)
OKLCH	oklch(42.95% 0.11 254.7)
XYZ	xyz(8.0195, 7.8627, 25.1348)
Luminance	0.0786 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F508A #8A591F

analogous

#1F858A #1F508A #231F8A

triadic

#1F508A #8A1F50 #508A1F

tetradic

#1F508A #8A1F85 #8A591F #1F8A23

square

#1F508A #8A1F85 #8A591F #1F8A23

split-complementary

#1F508A #8A231F #858A1F

monochromatic

#091626 #143358 #1F508A #2A6DBC #4C8CD7

Accessibility & contrast

On white

8.16

#1F508A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#1F508A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F508A

8.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F508A	#FFFFFF	#000000	##FFFFFF
##1F508A	1.00	8.16	2.57	8.16
#FFFFFF	8.16	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#34558C

Deuteranopia (green-blind)

#224B89

Tritanopia (blue-blind)

#005E66

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f508a;
/* rgb */ color: rgb(31, 80, 138);
/* oklch */ color: oklch(43.0% 0.110 254.7);

Tailwind

colors: {
  custom: {
    50: '#6b80ac',
    500: '#1f508a',
    950: '#000000',
  },
}

SCSS

$custom: #1f508a;
$custom-light: #6b80ac;
$custom-dark: #000000;

JSON

{
  "hex": "#1f508a",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 138
  },
  "hsl": {
    "h": 212.523,
    "s": 63.314,
    "l": 33.137
  },
  "oklch": {
    "l": 0.42954,
    "c": 0.10963,
    "h": 254.7
  },
  "luminance": 0.07864
}

Semantic roles & 50–950 ramp

primary

#1F508A

secondary

#BA874B

accent

#9B41E6

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1F508A

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

Preview Lab → · Contrast checker → · Palette generator →