#1B2E83#1B2E83

#1B2E83 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.7% C 0.144 H 268.0°. Best body text is #FFFFFF at 11.90:1 contrast (WCAG AA passes).

Color values

HEX	#1B2E83
RGB	rgb(27, 46, 131)
HSL	hsl(229, 66%, 31%)
HSV	hsv(229, 79%, 51%)
CMYK	cmyk(79.4%, 64.9%, 0%, 48.6%)
CIE-LAB	lab(23.08, 25.21, -49.82)
CIE-LCH	lch(23.08, 55.84, 296.84°)
OKLab	oklab(34.67% -0.0051 -0.1441)
OKLCH	oklch(34.67% 0.144 268)
XYZ	xyz(5.5243, 3.8251, 21.9155)
Luminance	0.0383 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2E83 #83701B

analogous

#1B6283 #1B2E83 #3C1B83

triadic

#1B2E83 #831B2E #2E831B

tetradic

#1B2E83 #831B62 #83701B #1B833C

square

#1B2E83 #831B62 #83701B #1B833C

split-complementary

#1B2E83 #833C1B #62831B

monochromatic

#060A1E #111C50 #1B2E83 #2540B6 #415CD8

Accessibility & contrast

On white

11.90

#1B2E83 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1B2E83 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2E83

11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2E83	#FFFFFF	#000000	##FFFFFF
##1B2E83	1.00	11.90	1.77	11.90
#FFFFFF	11.90	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C86

Deuteranopia (green-blind)

#003281

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1b2e83;
/* rgb */ color: rgb(27, 46, 131);
/* oklch */ color: oklch(34.7% 0.144 268.0);

Tailwind

colors: {
  custom: {
    50: '#6a66a8',
    500: '#1b2e83',
    950: '#000000',
  },
}

SCSS

$custom: #1b2e83;
$custom-light: #6a66a8;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2e83",
  "rgb": {
    "r": 27,
    "g": 46,
    "b": 131
  },
  "hsl": {
    "h": 229.038,
    "s": 65.823,
    "l": 30.98
  },
  "oklch": {
    "l": 0.34673,
    "c": 0.14418,
    "h": 268
  },
  "luminance": 0.03826
}

Semantic roles & 50–950 ramp

primary

#1B2E83

secondary

#B6A143

accent

#CA3FE9

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070610

muted

#7A7A7F

Preview Lab

Preview with #1B2E83

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

Preview Lab → · Contrast checker → · Palette generator →