#1B4F85#1B4F85

#1B4F85 is a dark, moderate cyan. Relative luminance 0.075; OKLCH L 42.2% C 0.105 H 252.4°. Best body text is #FFFFFF at 8.39:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F85
RGB	rgb(27, 79, 133)
HSL	hsl(211, 66%, 31%)
HSV	hsv(211, 80%, 52%)
CMYK	cmyk(79.7%, 40.6%, 0%, 47.8%)
CIE-LAB	lab(32.96, 3.25, -35.12)
CIE-LCH	lch(32.96, 35.27, 275.28°)
OKLab	oklab(42.25% -0.0317 -0.1003)
OKLCH	oklch(42.25% 0.105 252.4)
XYZ	xyz(7.4800, 7.5176, 23.2426)
Luminance	0.0752 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F85 #85511B

analogous

#1B8485 #1B4F85 #1C1B85

triadic

#1B4F85 #851B4F #4F851B

tetradic

#1B4F85 #851B84 #85511B #1B851C

square

#1B4F85 #851B84 #85511B #1B851C

split-complementary

#1B4F85 #851C1B #84851B

monochromatic

#06131F #113152 #1B4F85 #256DB8 #428CD9

Accessibility & contrast

On white

8.39

#1B4F85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.50

#1B4F85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F85

8.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F85	#FFFFFF	#000000	##FFFFFF
##1B4F85	1.00	8.39	2.50	8.39
#FFFFFF	8.39	1.00	21.00	1.00
#000000	2.50	21.00	1.00	21.00
##FFFFFF	8.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#355387

Deuteranopia (green-blind)

#244984

Tritanopia (blue-blind)

#005C63

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #1b4f85;
/* rgb */ color: rgb(27, 79, 133);
/* oklch */ color: oklch(42.2% 0.105 252.4);

Tailwind

colors: {
  custom: {
    50: '#687fa9',
    500: '#1b4f85',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f85;
$custom-light: #687fa9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f85",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 133
  },
  "hsl": {
    "h": 210.566,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.42245,
    "c": 0.10517,
    "h": 252.4
  },
  "luminance": 0.07518
}

Semantic roles & 50–950 ramp

primary

#1B4F85

secondary

#B87F44

accent

#963FE9

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B4F85

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

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