#1B2F87#1B2F87

#1B2F87 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.3% C 0.148 H 267.8°. Best body text is #FFFFFF at 11.65:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F87
RGB	rgb(27, 47, 135)
HSL	hsl(229, 67%, 32%)
HSV	hsv(229, 80%, 53%)
CMYK	cmyk(80%, 65.2%, 0%, 47.1%)
CIE-LAB	lab(23.72, 26.10, -51.29)
CIE-LCH	lch(23.72, 57.55, 296.97°)
OKLab	oklab(35.26% -0.0058 -0.1484)
OKLCH	oklch(35.26% 0.148 267.8)
XYZ	xyz(5.8402, 4.0146, 23.3841)
Luminance	0.0401 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F87 #87731B

analogous

#1B6587 #1B2F87 #3D1B87

triadic

#1B2F87 #871B2F #2F871B

tetradic

#1B2F87 #871B65 #87731B #1B873D

square

#1B2F87 #871B65 #87731B #1B873D

split-complementary

#1B2F87 #873D1B #65871B

monochromatic

#070B21 #111D54 #1B2F87 #2541BA #435FD9

Accessibility & contrast

On white

11.65

#1B2F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#1B2F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F87

11.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F87	#FFFFFF	#000000	##FFFFFF
##1B2F87	1.00	11.65	1.80	11.65
#FFFFFF	11.65	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8A

Deuteranopia (green-blind)

#003385

Tritanopia (blue-blind)

#004656

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2f87;
/* rgb */ color: rgb(27, 47, 135);
/* oklch */ color: oklch(35.3% 0.148 267.8);

Tailwind

colors: {
  custom: {
    50: '#6b67ab',
    500: '#1b2f87',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f87;
$custom-light: #6b67ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f87",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 135
  },
  "hsl": {
    "h": 228.889,
    "s": 66.667,
    "l": 31.765
  },
  "oklch": {
    "l": 0.35256,
    "c": 0.14848,
    "h": 267.8
  },
  "luminance": 0.04015
}

Semantic roles & 50–950 ramp

primary

#1B2F87

secondary

#BAA444

accent

#CA3EEA

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1B2F87

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

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