#1B2F85#1B2F85

#1B2F85 is a dark, vivid blue. Relative luminance 0.040; OKLCH L 35.1% C 0.146 H 267.7°. Best body text is #FFFFFF at 11.72:1 contrast (WCAG AA passes).

Color values

HEX	#1B2F85
RGB	rgb(27, 47, 133)
HSL	hsl(229, 66%, 31%)
HSV	hsv(229, 80%, 52%)
CMYK	cmyk(79.7%, 64.7%, 0%, 47.8%)
CIE-LAB	lab(23.54, 25.31, -50.34)
CIE-LCH	lch(23.54, 56.34, 296.69°)
OKLab	oklab(35.06% -0.0058 -0.1456)
OKLCH	oklch(35.06% 0.146 267.7)
XYZ	xyz(5.7007, 3.9589, 22.6494)
Luminance	0.0396 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2F85 #85711B

analogous

#1B6485 #1B2F85 #3C1B85

triadic

#1B2F85 #851B2F #2F851B

tetradic

#1B2F85 #851B64 #85711B #1B853C

square

#1B2F85 #851B64 #85711B #1B853C

split-complementary

#1B2F85 #853C1B #64851B

monochromatic

#060B1F #111D52 #1B2F85 #2541B8 #425ED9

Accessibility & contrast

On white

11.72

#1B2F85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.79

#1B2F85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2F85

11.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2F85	#FFFFFF	#000000	##FFFFFF
##1B2F85	1.00	11.72	1.79	11.72
#FFFFFF	11.72	1.00	21.00	1.00
#000000	1.79	21.00	1.00	21.00
##FFFFFF	11.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D88

Deuteranopia (green-blind)

#003383

Tritanopia (blue-blind)

#004555

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1b2f85;
/* rgb */ color: rgb(27, 47, 133);
/* oklch */ color: oklch(35.1% 0.146 267.7);

Tailwind

colors: {
  custom: {
    50: '#6a67a9',
    500: '#1b2f85',
    950: '#000000',
  },
}

SCSS

$custom: #1b2f85;
$custom-light: #6a67a9;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2f85",
  "rgb": {
    "r": 27,
    "g": 47,
    "b": 133
  },
  "hsl": {
    "h": 228.679,
    "s": 66.25,
    "l": 31.373
  },
  "oklch": {
    "l": 0.35062,
    "c": 0.1457,
    "h": 267.7
  },
  "luminance": 0.03959
}

Semantic roles & 50–950 ramp

primary

#1B2F85

secondary

#B8A244

accent

#C93FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#080610

muted

#7A7A7F

Preview Lab

Preview with #1B2F85

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

Preview Lab → · Contrast checker → · Palette generator →