#1F508B#1F508B

#1F508B is a dark, moderate cyan. Relative luminance 0.079; OKLCH L 43.0% C 0.111 H 255.0°. Best body text is #FFFFFF at 8.14:1 contrast (WCAG AA passes).

Color values

HEX	#1F508B
RGB	rgb(31, 80, 139)
HSL	hsl(213, 64%, 33%)
HSV	hsv(213, 78%, 55%)
CMYK	cmyk(77.7%, 42.4%, 0%, 45.5%)
CIE-LAB	lab(33.76, 5.49, -37.52)
CIE-LCH	lch(33.76, 37.92, 278.33°)
OKLab	oklab(43.02% -0.0287 -0.1072)
OKLCH	oklch(43.02% 0.111 255)
XYZ	xyz(8.0922, 7.8918, 25.5179)
Luminance	0.0789 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F508B #8B5A1F

analogous

#1F868B #1F508B #241F8B

triadic

#1F508B #8B1F50 #508B1F

tetradic

#1F508B #8B1F86 #8B5A1F #1F8B24

square

#1F508B #8B1F86 #8B5A1F #1F8B24

split-complementary

#1F508B #8B241F #868B1F

monochromatic

#091627 #143359 #1F508B #2A6DBD #4D8CD7

Accessibility & contrast

On white

8.14

#1F508B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#1F508B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F508B

8.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F508B	#FFFFFF	#000000	##FFFFFF
##1F508B	1.00	8.14	2.58	8.14
#FFFFFF	8.14	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#33558D

Deuteranopia (green-blind)

#214B8A

Tritanopia (blue-blind)

#005E66

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1f508b;
/* rgb */ color: rgb(31, 80, 139);
/* oklch */ color: oklch(43.0% 0.111 255.0);

Tailwind

colors: {
  custom: {
    50: '#6b80ad',
    500: '#1f508b',
    950: '#000000',
  },
}

SCSS

$custom: #1f508b;
$custom-light: #6b80ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1f508b",
  "rgb": {
    "r": 31,
    "g": 80,
    "b": 139
  },
  "hsl": {
    "h": 212.778,
    "s": 63.529,
    "l": 33.333
  },
  "oklch": {
    "l": 0.43021,
    "c": 0.11102,
    "h": 255
  },
  "luminance": 0.07893
}

Semantic roles & 50–950 ramp

primary

#1F508B

secondary

#BA884C

accent

#9C41E7

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#080A10

muted

#7A7C7F

Preview Lab

Preview with #1F508B

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

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