#1B5879#1B5879

#1B5879 is a dark, moderate cyan. Relative luminance 0.086; OKLCH L 43.8% C 0.081 H 236.9°. Best body text is #FFFFFF at 7.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B5879
RGB	rgb(27, 88, 121)
HSL	hsl(201, 64%, 29%)
HSV	hsv(201, 78%, 47%)
CMYK	cmyk(77.7%, 27.3%, 0%, 52.5%)
CIE-LAB	lab(35.19, -7.21, -24.20)
CIE-LCH	lch(35.19, 25.25, 253.40°)
OKLab	oklab(43.79% -0.0445 -0.0683)
OKLCH	oklch(43.79% 0.081 236.9)
XYZ	xyz(7.3915, 8.5921, 19.3543)
Luminance	0.0859 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B5879 #793C1B

analogous

#1B796B #1B5879 #1B2979

triadic

#1B5879 #791B58 #58791B

tetradic

#1B5879 #6B1B79 #793C1B #29791B

square

#1B5879 #6B1B79 #793C1B #29791B

split-complementary

#1B5879 #791B29 #796B1B

monochromatic

#061219 #103447 #1B5879 #267CAB #3B9ED3

Accessibility & contrast

On white

7.72

#1B5879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.72

#1B5879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B5879

7.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B5879	#FFFFFF	#000000	##FFFFFF
##1B5879	1.00	7.72	2.72	7.72
#FFFFFF	7.72	1.00	21.00	1.00
#000000	2.72	21.00	1.00	21.00
##FFFFFF	7.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#48587B

Deuteranopia (green-blind)

#3B4F78

Tritanopia (blue-blind)

#006063

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #1b5879;
/* rgb */ color: rgb(27, 88, 121);
/* oklch */ color: oklch(43.8% 0.081 236.9);

Tailwind

colors: {
  custom: {
    50: '#6687a0',
    500: '#1b5879',
    950: '#000000',
  },
}

SCSS

$custom: #1b5879;
$custom-light: #6687a0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b5879",
  "rgb": {
    "r": 27,
    "g": 88,
    "b": 121
  },
  "hsl": {
    "h": 201.064,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.4379,
    "c": 0.08148,
    "h": 236.9
  },
  "luminance": 0.08593
}

Semantic roles & 50–950 ramp

primary

#1B5879

secondary

#AD6843

accent

#7B41E7

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0E

muted

#7A7C7E

Preview Lab

Preview with #1B5879

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

Preview Lab → · Contrast checker → · Palette generator →