#1B519B#1B519B

#1B519B is a dark, vivid cyan. Relative luminance 0.085; OKLCH L 44.3% C 0.133 H 257.6°. Best body text is #FFFFFF at 7.79:1 contrast (WCAG AA passes).

Color values

HEX	#1B519B
RGB	rgb(27, 81, 155)
HSL	hsl(215, 70%, 36%)
HSV	hsv(215, 83%, 61%)
CMYK	cmyk(82.6%, 47.7%, 0%, 39.2%)
CIE-LAB	lab(34.97, 10.77, -45.30)
CIE-LCH	lch(34.97, 46.57, 283.38°)
OKLab	oklab(44.26% -0.0287 -0.1302)
OKLCH	oklch(44.26% 0.133 257.6)
XYZ	xyz(9.3086, 8.4833, 32.1508)
Luminance	0.0848 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B519B #9B651B

analogous

#1B919B #1B519B #251B9B

triadic

#1B519B #9B1B51 #519B1B

tetradic

#1B519B #9B1B91 #9B651B #1B9B25

square

#1B519B #9B1B91 #9B651B #1B9B25

split-complementary

#1B519B #9B251B #919B1B

monochromatic

#091B33 #123667 #1B519B #246CCF #508DE0

Accessibility & contrast

On white

7.79

#1B519B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.70

#1B519B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B519B

7.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B519B	#FFFFFF	#000000	##FFFFFF
##1B519B	1.00	7.79	2.70	7.79
#FFFFFF	7.79	1.00	21.00	1.00
#000000	2.70	21.00	1.00	21.00
##FFFFFF	7.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#28589E

Deuteranopia (green-blind)

#004D9A

Tritanopia (blue-blind)

#00636E

Achromatopsia (no color)

#525252

Design tokens & code

CSS

--color: #1b519b;
/* rgb */ color: rgb(27, 81, 155);
/* oklch */ color: oklch(44.3% 0.133 257.6);

Tailwind

colors: {
  custom: {
    50: '#6e81b9',
    500: '#1b519b',
    950: '#000000',
  },
}

SCSS

$custom: #1b519b;
$custom-light: #6e81b9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b519b",
  "rgb": {
    "r": 27,
    "g": 81,
    "b": 155
  },
  "hsl": {
    "h": 214.688,
    "s": 70.33,
    "l": 35.686
  },
  "oklch": {
    "l": 0.44259,
    "c": 0.13329,
    "h": 257.6
  },
  "luminance": 0.08484
}

Semantic roles & 50–950 ramp

primary

#1B519B

secondary

#C3924F

accent

#A23BED

background

#F7F7FB

surface

#EDEEF6

border

#C8C9D0

text

#080A11

muted

#7B7C80

Preview Lab

Preview with #1B519B

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

Preview Lab → · Contrast checker → · Palette generator →