#1B2671#1B2671

#1B2671 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.3% C 0.129 H 270.5°. Best body text is #FFFFFF at 13.44:1 contrast (WCAG AA passes).

Color values

HEX	#1B2671
RGB	rgb(27, 38, 113)
HSL	hsl(232, 61%, 27%)
HSV	hsv(232, 76%, 44%)
CMYK	cmyk(76.1%, 66.4%, 0%, 55.7%)
CIE-LAB	lab(19.27, 23.68, -44.61)
CIE-LCH	lch(19.27, 50.50, 297.96°)
OKLab	oklab(31.35% 0.0011 -0.1289)
OKLCH	oklch(31.35% 0.129 270.5)
XYZ	xyz(4.1247, 2.8111, 15.9448)
Luminance	0.0281 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2671 #71661B

analogous

#1B5171 #1B2671 #3B1B71

triadic

#1B2671 #711B26 #26711B

tetradic

#1B2671 #711B51 #71661B #1B713B

square

#1B2671 #711B51 #71661B #1B713B

split-complementary

#1B2671 #713B1B #51711B

monochromatic

#060819 #0F1540 #1B2671 #2737A2 #374BCF

Accessibility & contrast

On white

13.44

#1B2671 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#1B2671 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2671

13.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2671	#FFFFFF	#000000	##FFFFFF
##1B2671	1.00	13.44	1.56	13.44
#FFFFFF	13.44	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003373

Deuteranopia (green-blind)

#002B70

Tritanopia (blue-blind)

#003947

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #1b2671;
/* rgb */ color: rgb(27, 38, 113);
/* oklch */ color: oklch(31.3% 0.129 270.5);

Tailwind

colors: {
  custom: {
    50: '#65609b',
    500: '#1b2671',
    950: '#000000',
  },
}

SCSS

$custom: #1b2671;
$custom-light: #65609b;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2671",
  "rgb": {
    "r": 27,
    "g": 38,
    "b": 113
  },
  "hsl": {
    "h": 232.326,
    "s": 61.429,
    "l": 27.451
  },
  "oklch": {
    "l": 0.31345,
    "c": 0.12889,
    "h": 270.5
  },
  "luminance": 0.02811
}

Semantic roles & 50–950 ramp

primary

#1B2671

secondary

#A69942

accent

#D043E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06040E

muted

#7A797E

Preview Lab

Preview with #1B2671

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

Preview Lab → · Contrast checker → · Palette generator →