#1B4577#1B4577

#1B4577 is a dark, moderate cyan. Relative luminance 0.058; OKLCH L 38.8% C 0.097 H 254.7°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#1B4577
RGB	rgb(27, 69, 119)
HSL	hsl(213, 63%, 29%)
HSV	hsv(213, 77%, 47%)
CMYK	cmyk(77.3%, 42%, 0%, 53.3%)
CIE-LAB	lab(28.95, 4.30, -32.79)
CIE-LCH	lch(28.95, 33.07, 277.47°)
OKLab	oklab(38.85% -0.0256 -0.0936)
OKLCH	oklch(38.85% 0.097 254.7)
XYZ	xyz(5.9087, 5.8205, 18.2613)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4577 #774D1B

analogous

#1B7377 #1B4577 #1F1B77

triadic

#1B4577 #771B45 #45771B

tetradic

#1B4577 #771B73 #774D1B #1B771F

square

#1B4577 #771B73 #774D1B #1B771F

split-complementary

#1B4577 #771F1B #73771B

monochromatic

#060E19 #102845 #1B4577 #2662A9 #3A80D2

Accessibility & contrast

On white

9.70

#1B4577 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#1B4577 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4577

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4577	#FFFFFF	#000000	##FFFFFF
##1B4577	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4979

Deuteranopia (green-blind)

#1E4076

Tritanopia (blue-blind)

#005158

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #1b4577;
/* rgb */ color: rgb(27, 69, 119);
/* oklch */ color: oklch(38.8% 0.097 254.7);

Tailwind

colors: {
  custom: {
    50: '#65789e',
    500: '#1b4577',
    950: '#000000',
  },
}

SCSS

$custom: #1b4577;
$custom-light: #65789e;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4577",
  "rgb": {
    "r": 27,
    "g": 69,
    "b": 119
  },
  "hsl": {
    "h": 212.609,
    "s": 63.014,
    "l": 28.627
  },
  "oklch": {
    "l": 0.38847,
    "c": 0.09706,
    "h": 254.7
  },
  "luminance": 0.05821
}

Semantic roles & 50–950 ramp

primary

#1B4577

secondary

#AB7B42

accent

#9B42E6

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #1B4577

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

Preview Lab → · Contrast checker → · Palette generator →