#1B2474#1B2474

#1B2474 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.3% C 0.136 H 271.0°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#1B2474
RGB	rgb(27, 36, 116)
HSL	hsl(234, 62%, 28%)
HSV	hsv(234, 77%, 45%)
CMYK	cmyk(76.7%, 69%, 0%, 54.5%)
CIE-LAB	lab(19.04, 26.23, -46.92)
CIE-LCH	lch(19.04, 53.76, 299.21°)
OKLab	oklab(31.26% 0.0023 -0.1357)
OKLCH	oklch(31.26% 0.136 271)
XYZ	xyz(4.2342, 2.7553, 16.8283)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2474 #746B1B

analogous

#1B5074 #1B2474 #3F1B74

triadic

#1B2474 #741B24 #24741B

tetradic

#1B2474 #741B50 #746B1B #1B743F

square

#1B2474 #741B50 #746B1B #1B743F

split-complementary

#1B2474 #743F1B #50741B

monochromatic

#060819 #0F1542 #1B2474 #2733A6 #3948D1

Accessibility & contrast

On white

13.54

#1B2474 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#1B2474 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2474

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2474	#FFFFFF	#000000	##FFFFFF
##1B2474	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003277

Deuteranopia (green-blind)

#002A72

Tritanopia (blue-blind)

#003948

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #1b2474;
/* rgb */ color: rgb(27, 36, 116);
/* oklch */ color: oklch(31.3% 0.136 271.0);

Tailwind

colors: {
  custom: {
    50: '#665e9d',
    500: '#1b2474',
    950: '#000000',
  },
}

SCSS

$custom: #1b2474;
$custom-light: #665e9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2474",
  "rgb": {
    "r": 27,
    "g": 36,
    "b": 116
  },
  "hsl": {
    "h": 233.933,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.31262,
    "c": 0.13571,
    "h": 271
  },
  "luminance": 0.02756
}

Semantic roles & 50–950 ramp

primary

#1B2474

secondary

#A99E42

accent

#D542E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2474

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

Preview Lab → · Contrast checker → · Palette generator →