#1B4E85#1B4E85

#1B4E85 is a dark, moderate cyan. Relative luminance 0.074; OKLCH L 42.0% C 0.106 H 253.2°. Best body text is #FFFFFF at 8.48:1 contrast (WCAG AA passes).

Color values

HEX	#1B4E85
RGB	rgb(27, 78, 133)
HSL	hsl(211, 66%, 31%)
HSV	hsv(211, 80%, 52%)
CMYK	cmyk(79.7%, 41.4%, 0%, 47.8%)
CIE-LAB	lab(32.64, 3.91, -35.62)
CIE-LCH	lch(32.64, 35.83, 276.26°)
OKLab	oklab(42% -0.0308 -0.1017)
OKLCH	oklch(42% 0.106 253.2)
XYZ	xyz(7.4084, 7.3744, 23.2187)
Luminance	0.0737 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4E85 #85521B

analogous

#1B8385 #1B4E85 #1D1B85

triadic

#1B4E85 #851B4E #4E851B

tetradic

#1B4E85 #851B83 #85521B #1B851D

square

#1B4E85 #851B83 #85521B #1B851D

split-complementary

#1B4E85 #851D1B #83851B

monochromatic

#06121F #113052 #1B4E85 #256CB8 #428AD9

Accessibility & contrast

On white

8.48

#1B4E85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#1B4E85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4E85

8.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4E85	#FFFFFF	#000000	##FFFFFF
##1B4E85	1.00	8.48	2.47	8.48
#FFFFFF	8.48	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345287

Deuteranopia (green-blind)

#224884

Tritanopia (blue-blind)

#005B63

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4e85;
/* rgb */ color: rgb(27, 78, 133);
/* oklch */ color: oklch(42.0% 0.106 253.2);

Tailwind

colors: {
  custom: {
    50: '#687fa9',
    500: '#1b4e85',
    950: '#000000',
  },
}

SCSS

$custom: #1b4e85;
$custom-light: #687fa9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4e85",
  "rgb": {
    "r": 27,
    "g": 78,
    "b": 133
  },
  "hsl": {
    "h": 211.132,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.42001,
    "c": 0.1063,
    "h": 253.2
  },
  "luminance": 0.07375
}

Semantic roles & 50–950 ramp

primary

#1B4E85

secondary

#B88044

accent

#973FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B4E85

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

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