#1B2174#1B2174

#1B2174 is a dark, vivid blue. Relative luminance 0.026; OKLCH L 30.7% C 0.139 H 271.7°. Best body text is #FFFFFF at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#1B2174
RGB	rgb(27, 33, 116)
HSL	hsl(236, 62%, 28%)
HSV	hsv(236, 77%, 45%)
CMYK	cmyk(76.7%, 71.6%, 0%, 54.5%)
CIE-LAB	lab(18.28, 28.26, -48.16)
CIE-LCH	lch(18.28, 55.84, 300.40°)
OKLab	oklab(30.71% 0.0042 -0.1393)
OKLCH	oklch(30.71% 0.139 271.7)
XYZ	xyz(4.1472, 2.5812, 16.7993)
Luminance	0.0258 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B2174 #746E1B

analogous

#1B4D74 #1B2174 #411B74

triadic

#1B2174 #741B21 #21741B

tetradic

#1B2174 #741B4D #746E1B #1B7441

square

#1B2174 #741B4D #746E1B #1B7441

split-complementary

#1B2174 #74411B #4D741B

monochromatic

#060719 #0F1342 #1B2174 #272FA6 #3943D1

Accessibility & contrast

On white

13.85

#1B2174 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#1B2174 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B2174

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B2174	#FFFFFF	#000000	##FFFFFF
##1B2174	1.00	13.85	1.52	13.85
#FFFFFF	13.85	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003177

Deuteranopia (green-blind)

#002872

Tritanopia (blue-blind)

#003847

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1b2174;
/* rgb */ color: rgb(27, 33, 116);
/* oklch */ color: oklch(30.7% 0.139 271.7);

Tailwind

colors: {
  custom: {
    50: '#675c9d',
    500: '#1b2174',
    950: '#000000',
  },
}

SCSS

$custom: #1b2174;
$custom-light: #675c9d;
$custom-dark: #000000;

JSON

{
  "hex": "#1b2174",
  "rgb": {
    "r": 27,
    "g": 33,
    "b": 116
  },
  "hsl": {
    "h": 235.955,
    "s": 62.238,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30714,
    "c": 0.13937,
    "h": 271.7
  },
  "luminance": 0.02582
}

Semantic roles & 50–950 ramp

primary

#1B2174

secondary

#A9A242

accent

#DA42E5

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07040E

muted

#7A797E

Preview Lab

Preview with #1B2174

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

Preview Lab → · Contrast checker → · Palette generator →