#1D158B#1D158B

#1D158B is a dark, vivid blue. Relative luminance 0.027; OKLCH L 31.8% C 0.180 H 272.3°. Best body text is #FFFFFF at 13.70:1 contrast (WCAG AA passes).

Color values

HEX	#1D158B
RGB	rgb(29, 21, 139)
HSL	hsl(244, 74%, 31%)
HSV	hsv(244, 85%, 55%)
CMYK	cmyk(79.1%, 84.9%, 0%, 45.5%)
CIE-LAB	lab(18.63, 43.34, -62.18)
CIE-LCH	lch(18.63, 75.79, 304.87°)
OKLab	oklab(31.77% 0.0072 -0.1799)
OKLCH	oklch(31.77% 0.18 272.3)
XYZ	xyz(5.4335, 2.6610, 24.6484)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D158B #838B15

analogous

#15488B #1D158B #58158B

triadic

#1D158B #8B1D15 #158B1D

tetradic

#1D158B #8B1548 #838B15 #158B58

square

#1D158B #8B1548 #838B15 #158B58

split-complementary

#1D158B #8B5815 #488B15

monochromatic

#070521 #120D56 #1D158B #281DC0 #4539E1

Accessibility & contrast

On white

13.70

#1D158B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#1D158B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D158B

13.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D158B	#FFFFFF	#000000	##FFFFFF
##1D158B	1.00	13.70	1.53	13.70
#FFFFFF	13.70	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00338E

Deuteranopia (green-blind)

#002789

Tritanopia (blue-blind)

#003B52

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #1d158b;
/* rgb */ color: rgb(29, 21, 139);
/* oklch */ color: oklch(31.8% 0.180 272.3);

Tailwind

colors: {
  custom: {
    50: '#6f57ae',
    500: '#1d158b',
    950: '#000000',
  },
}

SCSS

$custom: #1d158b;
$custom-light: #6f57ae;
$custom-dark: #000000;

JSON

{
  "hex": "#1d158b",
  "rgb": {
    "r": 29,
    "g": 21,
    "b": 139
  },
  "hsl": {
    "h": 244.068,
    "s": 73.75,
    "l": 31.373
  },
  "oklch": {
    "l": 0.31773,
    "c": 0.18003,
    "h": 272.3
  },
  "luminance": 0.02662
}

Semantic roles & 50–950 ramp

primary

#1D158B

secondary

#B6BF3D

accent

#F037E4

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#090310

muted

#7B787F

Preview Lab

Preview with #1D158B

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

Preview Lab → · Contrast checker → · Palette generator →