#1B129D#1B129D

#1B129D is a dark, highly saturated blue. Relative luminance 0.031; OKLCH L 33.6% C 0.203 H 270.2°. Best body text is #FFFFFF at 12.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B129D
RGB	rgb(27, 18, 157)
HSL	hsl(244, 79%, 34%)
HSV	hsv(244, 89%, 62%)
CMYK	cmyk(82.8%, 88.5%, 0%, 38.4%)
CIE-LAB	lab(20.44, 50.02, -70.34)
CIE-LCH	lch(20.44, 86.31, 305.42°)
OKLab	oklab(33.65% 0.0007 -0.2034)
OKLCH	oklch(33.65% 0.203 270.2)
XYZ	xyz(6.7520, 3.0992, 32.1341)
Luminance	0.0310 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B129D #949D12

analogous

#124F9D #1B129D #61129D

triadic

#1B129D #9D1B12 #129D1B

tetradic

#1B129D #9D124F #949D12 #129D61

square

#1B129D #9D124F #949D12 #129D61

split-complementary

#1B129D #9D6112 #4F9D12

monochromatic

#08052F #120C66 #1B129D #2418D4 #4B40E9

Accessibility & contrast

On white

12.96

#1B129D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#1B129D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B129D

12.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B129D	#FFFFFF	#000000	##FFFFFF
##1B129D	1.00	12.96	1.62	12.96
#FFFFFF	12.96	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0038A1

Deuteranopia (green-blind)

#002A9B

Tritanopia (blue-blind)

#00425C

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #1b129d;
/* rgb */ color: rgb(27, 18, 157);
/* oklch */ color: oklch(33.6% 0.203 270.2);

Tailwind

colors: {
  custom: {
    50: '#7357bb',
    500: '#1b129d',
    950: '#000000',
  },
}

SCSS

$custom: #1b129d;
$custom-light: #7357bb;
$custom-dark: #000000;

JSON

{
  "hex": "#1b129d",
  "rgb": {
    "r": 27,
    "g": 18,
    "b": 157
  },
  "hsl": {
    "h": 243.885,
    "s": 79.429,
    "l": 34.314
  },
  "oklch": {
    "l": 0.33647,
    "c": 0.20344,
    "h": 270.2
  },
  "luminance": 0.031
}

Semantic roles & 50–950 ramp

primary

#1B129D

secondary

#C0C942

accent

#F632E9

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0312

muted

#7C7881

Preview Lab

Preview with #1B129D

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

Preview Lab → · Contrast checker → · Palette generator →