#1B4A74#1B4A74

#1B4A74 is a dark, moderate cyan. Relative luminance 0.064; OKLCH L 39.9% C 0.087 H 248.8°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A74
RGB	rgb(27, 74, 116)
HSL	hsl(208, 62%, 28%)
HSV	hsv(208, 77%, 45%)
CMYK	cmyk(76.7%, 36.2%, 0%, 54.5%)
CIE-LAB	lab(30.38, -0.24, -28.64)
CIE-LCH	lch(30.38, 28.64, 269.51°)
OKLab	oklab(39.9% -0.0315 -0.0814)
OKLCH	oklch(39.9% 0.087 248.8)
XYZ	xyz(6.0520, 6.3908, 17.4342)
Luminance	0.0639 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A74 #74451B

analogous

#1B7471 #1B4A74 #1B1D74

triadic

#1B4A74 #741B4A #4A741B

tetradic

#1B4A74 #711B74 #74451B #1D741B

square

#1B4A74 #711B74 #74451B #1D741B

split-complementary

#1B4A74 #741B1D #74711B

monochromatic

#061019 #0F2A42 #1B4A74 #276AA6 #3989D1

Accessibility & contrast

On white

9.22

#1B4A74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#1B4A74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A74

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A74	#FFFFFF	#000000	##FFFFFF
##1B4A74	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#374C76

Deuteranopia (green-blind)

#2A4473

Tritanopia (blue-blind)

#005459

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1b4a74;
/* rgb */ color: rgb(27, 74, 116);
/* oklch */ color: oklch(39.9% 0.087 248.8);

Tailwind

colors: {
  custom: {
    50: '#657c9c',
    500: '#1b4a74',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a74;
$custom-light: #657c9c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a74",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 116
  },
  "hsl": {
    "h": 208.315,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.39902,
    "c": 0.08727,
    "h": 248.8
  },
  "luminance": 0.06392
}

Semantic roles & 50–950 ramp

primary

#1B4A74

secondary

#A97342

accent

#8F42E5

background

#F6F7F9

surface

#EBEEF2

border

#C6C9CC

text

#06090E

muted

#7A7B7E

Preview Lab

Preview with #1B4A74

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

Preview Lab → · Contrast checker → · Palette generator →