#1B4F87#1B4F87

#1B4F87 is a dark, moderate cyan. Relative luminance 0.076; OKLCH L 42.4% C 0.108 H 253.2°. Best body text is #FFFFFF at 8.35:1 contrast (WCAG AA passes).

Color values

HEX	#1B4F87
RGB	rgb(27, 79, 135)
HSL	hsl(211, 67%, 32%)
HSV	hsv(211, 80%, 53%)
CMYK	cmyk(80%, 41.5%, 0%, 47.1%)
CIE-LAB	lab(33.08, 4.05, -36.16)
CIE-LCH	lch(33.08, 36.38, 276.39°)
OKLab	oklab(42.38% -0.0312 -0.1033)
OKLCH	oklch(42.38% 0.108 253.2)
XYZ	xyz(7.6195, 7.5733, 23.9772)
Luminance	0.0757 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B4F87 #87531B

analogous

#1B8587 #1B4F87 #1D1B87

triadic

#1B4F87 #871B4F #4F871B

tetradic

#1B4F87 #871B85 #87531B #1B871D

square

#1B4F87 #871B85 #87531B #1B871D

split-complementary

#1B4F87 #871D1B #85871B

monochromatic

#071321 #113154 #1B4F87 #256DBA #438BD9

Accessibility & contrast

On white

8.35

#1B4F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1B4F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B4F87

8.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B4F87	#FFFFFF	#000000	##FFFFFF
##1B4F87	1.00	8.35	2.51	8.35
#FFFFFF	8.35	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#345389

Deuteranopia (green-blind)

#224986

Tritanopia (blue-blind)

#005C64

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1b4f87;
/* rgb */ color: rgb(27, 79, 135);
/* oklch */ color: oklch(42.4% 0.108 253.2);

Tailwind

colors: {
  custom: {
    50: '#697faa',
    500: '#1b4f87',
    950: '#000000',
  },
}

SCSS

$custom: #1b4f87;
$custom-light: #697faa;
$custom-dark: #000000;

JSON

{
  "hex": "#1b4f87",
  "rgb": {
    "r": 27,
    "g": 79,
    "b": 135
  },
  "hsl": {
    "h": 211.111,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.42379,
    "c": 0.10793,
    "h": 253.2
  },
  "luminance": 0.07574
}

Semantic roles & 50–950 ramp

primary

#1B4F87

secondary

#BA8144

accent

#973EEA

background

#F6F7FA

surface

#ECEEF4

border

#C7C9CE

text

#070A10

muted

#7A7C7F

Preview Lab

Preview with #1B4F87

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

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