#1B4879#1B4879

#1B4879 is a dark, moderate cyan. Relative luminance 0.062; OKLCH L 39.7% C 0.096 H 253.1°. Best body text is #FFFFFF at 9.33:1 contrast (WCAG AA passes).

Color values

HEX	#1B4879
RGB	rgb(27, 72, 121)
HSL	hsl(211, 64%, 29%)
HSV	hsv(211, 78%, 47%)
CMYK	cmyk(77.7%, 40.5%, 0%, 52.5%)
CIE-LAB	lab(30.03, 3.08, -32.33)
CIE-LCH	lch(30.03, 32.48, 275.45°)
OKLab	oklab(39.72% -0.0281 -0.0922)
OKLCH	oklch(39.72% 0.096 253.1)
XYZ	xyz(6.2193, 6.2475, 18.9636)
Luminance	0.0625 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4879 #794C1B

analogous

#1B7779 #1B4879 #1D1B79

triadic

#1B4879 #791B48 #48791B

tetradic

#1B4879 #791B77 #794C1B #1B791D

square

#1B4879 #791B77 #794C1B #1B791D

split-complementary

#1B4879 #791D1B #77791B

monochromatic

#060F19 #102A47 #1B4879 #2666AB #3B84D3

Accessibility & contrast

On white

9.33

#1B4879 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#1B4879 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4879

9.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4879	#FFFFFF	#000000	##FFFFFF
##1B4879	1.00	9.33	2.25	9.33
#FFFFFF	9.33	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#314B7B

Deuteranopia (green-blind)

#224378

Tritanopia (blue-blind)

#00545A

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #1b4879;
/* rgb */ color: rgb(27, 72, 121);
/* oklch */ color: oklch(39.7% 0.096 253.1);

Tailwind

colors: {
  custom: {
    50: '#667aa0',
    500: '#1b4879',
    950: '#000000',
  },
}

SCSS

$custom: #1b4879;
$custom-light: #667aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4879",
  "rgb": {
    "r": 27,
    "g": 72,
    "b": 121
  },
  "hsl": {
    "h": 211.277,
    "s": 63.514,
    "l": 29.02
  },
  "oklch": {
    "l": 0.39724,
    "c": 0.0964,
    "h": 253.1
  },
  "luminance": 0.06248
}

Semantic roles & 50–950 ramp

primary

#1B4879

secondary

#AD7A43

accent

#9741E7

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4879

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

Preview Lab → · Contrast checker → · Palette generator →