#1B4A85#1B4A85

#1B4A85 is a dark, moderate cyan. Relative luminance 0.068; OKLCH L 41.0% C 0.111 H 255.9°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#1B4A85
RGB	rgb(27, 74, 133)
HSL	hsl(213, 66%, 31%)
HSV	hsv(213, 80%, 52%)
CMYK	cmyk(79.7%, 44.4%, 0%, 47.8%)
CIE-LAB	lab(31.40, 6.59, -37.60)
CIE-LCH	lch(31.40, 38.18, 279.93°)
OKLab	oklab(41.03% -0.0271 -0.1077)
OKLCH	oklch(41.03% 0.111 255.9)
XYZ	xyz(7.1328, 6.8232, 23.1268)
Luminance	0.0682 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4A85 #85561B

analogous

#1B7F85 #1B4A85 #211B85

triadic

#1B4A85 #851B4A #4A851B

tetradic

#1B4A85 #851B7F #85561B #1B8521

square

#1B4A85 #851B7F #85561B #1B8521

split-complementary

#1B4A85 #85211B #7F851B

monochromatic

#06111F #112E52 #1B4A85 #2566B8 #4285D9

Accessibility & contrast

On white

8.88

#1B4A85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1B4A85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4A85

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4A85	#FFFFFF	#000000	##FFFFFF
##1B4A85	1.00	8.88	2.36	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4F87

Deuteranopia (green-blind)

#194584

Tritanopia (blue-blind)

#005861

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1b4a85;
/* rgb */ color: rgb(27, 74, 133);
/* oklch */ color: oklch(41.0% 0.111 255.9);

Tailwind

colors: {
  custom: {
    50: '#687ca9',
    500: '#1b4a85',
    950: '#000000',
  },
}

SCSS

$custom: #1b4a85;
$custom-light: #687ca9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4a85",
  "rgb": {
    "r": 27,
    "g": 74,
    "b": 133
  },
  "hsl": {
    "h": 213.396,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.41034,
    "c": 0.11102,
    "h": 255.9
  },
  "luminance": 0.06824
}

Semantic roles & 50–950 ramp

primary

#1B4A85

secondary

#B88544

accent

#9E3FE9

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070910

muted

#7A7B7F

Preview Lab

Preview with #1B4A85

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

Preview Lab → · Contrast checker → · Palette generator →