#1D3BA7#1D3BA7

#1D3BA7 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.177 H 266.2°. Best body text is #FFFFFF at 9.39:1 contrast (WCAG AA passes).

Color values

HEX	#1D3BA7
RGB	rgb(29, 59, 167)
HSL	hsl(227, 70%, 38%)
HSV	hsv(227, 83%, 65%)
CMYK	cmyk(82.6%, 64.7%, 0%, 34.5%)
CIE-LAB	lab(29.86, 30.60, -60.84)
CIE-LCH	lch(29.86, 68.10, 296.70°)
OKLab	oklab(40.71% -0.0118 -0.1761)
OKLCH	oklch(40.71% 0.177 266.2)
XYZ	xyz(9.0433, 6.1781, 37.2676)
Luminance	0.0618 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3BA7 #A7891D

analogous

#1D80A7 #1D3BA7 #441DA7

triadic

#1D3BA7 #A71D3B #3BA71D

tetradic

#1D3BA7 #A71D80 #A7891D #1DA744

square

#1D3BA7 #A71D80 #A7891D #1DA744

split-complementary

#1D3BA7 #A7441D #80A71D

monochromatic

#0B163F #142973 #1D3BA7 #284EDA #5C79E3

Accessibility & contrast

On white

9.39

#1D3BA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#1D3BA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3BA7

9.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3BA7	#FFFFFF	#000000	##FFFFFF
##1D3BA7	1.00	9.39	2.24	9.39
#FFFFFF	9.39	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAA

Deuteranopia (green-blind)

#0040A5

Tritanopia (blue-blind)

#00586B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d3ba7;
/* rgb */ color: rgb(29, 59, 167);
/* oklch */ color: oklch(40.7% 0.177 266.2);

Tailwind

colors: {
  custom: {
    50: '#7370c2',
    500: '#1d3ba7',
    950: '#000000',
  },
}

SCSS

$custom: #1d3ba7;
$custom-light: #7370c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3ba7",
  "rgb": {
    "r": 29,
    "g": 59,
    "b": 167
  },
  "hsl": {
    "h": 226.957,
    "s": 70.408,
    "l": 38.431
  },
  "oklch": {
    "l": 0.40711,
    "c": 0.17654,
    "h": 266.2
  },
  "luminance": 0.06179
}

Semantic roles & 50–950 ramp

primary

#1D3BA7

secondary

#C7AF59

accent

#C63BED

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #1D3BA7

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

Preview Lab → · Contrast checker → · Palette generator →