#1B5481#1B5481

#1B5481 is a dark, moderate cyan. Relative luminance 0.082; OKLCH L 43.2% C 0.095 H 246.5°. Best body text is #FFFFFF at 7.98:1 contrast (WCAG AA passes).

Color values

HEX	#1B5481
RGB	rgb(27, 84, 129)
HSL	hsl(206, 65%, 31%)
HSV	hsv(206, 79%, 51%)
CMYK	cmyk(79.1%, 34.9%, 0%, 49.4%)
CIE-LAB	lab(34.31, -1.60, -30.51)
CIE-LCH	lch(34.31, 30.55, 267.00°)
OKLab	oklab(43.23% -0.0377 -0.0867)
OKLCH	oklch(43.23% 0.095 246.5)
XYZ	xyz(7.5832, 8.1577, 21.9396)
Luminance	0.0816 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5481 #81481B

analogous

#1B817B #1B5481 #1B2181

triadic

#1B5481 #811B54 #54811B

tetradic

#1B5481 #7B1B81 #81481B #21811B

square

#1B5481 #7B1B81 #81481B #21811B

split-complementary

#1B5481 #811B21 #817B1B

monochromatic

#06121C #10334E #1B5481 #2675B4 #3F94D7

Accessibility & contrast

On white

7.98

#1B5481 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.63

#1B5481 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5481

7.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5481	#FFFFFF	#000000	##FFFFFF
##1B5481	1.00	7.98	2.63	7.98
#FFFFFF	7.98	1.00	21.00	1.00
#000000	2.63	21.00	1.00	21.00
##FFFFFF	7.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F5683

Deuteranopia (green-blind)

#314C80

Tritanopia (blue-blind)

#005F64

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #1b5481;
/* rgb */ color: rgb(27, 84, 129);
/* oklch */ color: oklch(43.2% 0.095 246.5);

Tailwind

colors: {
  custom: {
    50: '#6883a6',
    500: '#1b5481',
    950: '#000000',
  },
}

SCSS

$custom: #1b5481;
$custom-light: #6883a6;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5481",
  "rgb": {
    "r": 27,
    "g": 84,
    "b": 129
  },
  "hsl": {
    "h": 206.471,
    "s": 65.385,
    "l": 30.588
  },
  "oklch": {
    "l": 0.43231,
    "c": 0.09453,
    "h": 246.5
  },
  "luminance": 0.08159
}

Semantic roles & 50–950 ramp

primary

#1B5481

secondary

#B57543

accent

#8A3FE8

background

#F6F8FA

surface

#EBEFF4

border

#C6CACE

text

#070A0F

muted

#7A7C7F

Preview Lab

Preview with #1B5481

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

Preview Lab → · Contrast checker → · Palette generator →