#1D43A0#1D43A0

#1D43A0 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.7% C 0.157 H 263.9°. Best body text is #FFFFFF at 8.89:1 contrast (WCAG AA passes).

Color values

HEX	#1D43A0
RGB	rgb(29, 67, 160)
HSL	hsl(223, 69%, 37%)
HSV	hsv(223, 82%, 63%)
CMYK	cmyk(81.9%, 58.1%, 0%, 37.3%)
CIE-LAB	lab(31.38, 22.47, -54.13)
CIE-LCH	lch(31.38, 58.61, 292.55°)
OKLab	oklab(41.66% -0.0166 -0.1564)
OKLCH	oklch(41.66% 0.157 263.9)
XYZ	xyz(8.8568, 6.8125, 34.0990)
Luminance	0.0681 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D43A0 #A07A1D

analogous

#1D85A0 #1D43A0 #381DA0

triadic

#1D43A0 #A01D43 #43A01D

tetradic

#1D43A0 #A01D85 #A07A1D #1DA038

square

#1D43A0 #A01D85 #A07A1D #1DA038

split-complementary

#1D43A0 #A0381D #85A01D

monochromatic

#0A1838 #142D6C #1D43A0 #2659D4 #577FE1

Accessibility & contrast

On white

8.89

#1D43A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#1D43A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D43A0

8.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D43A0	#FFFFFF	#000000	##FFFFFF
##1D43A0	1.00	8.89	2.36	8.89
#FFFFFF	8.89	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A3

Deuteranopia (green-blind)

#00449E

Tritanopia (blue-blind)

#005A6B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1d43a0;
/* rgb */ color: rgb(29, 67, 160);
/* oklch */ color: oklch(41.7% 0.157 263.9);

Tailwind

colors: {
  custom: {
    50: '#7076bd',
    500: '#1d43a0',
    950: '#000000',
  },
}

SCSS

$custom: #1d43a0;
$custom-light: #7076bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d43a0",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 160
  },
  "hsl": {
    "h": 222.595,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.41655,
    "c": 0.15728,
    "h": 263.9
  },
  "luminance": 0.06814
}

Semantic roles & 50–950 ramp

primary

#1D43A0

secondary

#C4A455

accent

#B93CEC

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1D43A0

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

Preview Lab → · Contrast checker → · Palette generator →