#1D3A7C#1D3A7C

#1D3A7C is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.7% C 0.118 H 263.7°. Best body text is #FFFFFF at 10.78:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A7C
RGB	rgb(29, 58, 124)
HSL	hsl(222, 62%, 30%)
HSV	hsv(222, 77%, 49%)
CMYK	cmyk(76.6%, 53.2%, 0%, 51.4%)
CIE-LAB	lab(25.99, 14.24, -40.69)
CIE-LCH	lch(25.99, 43.11, 289.28°)
OKLab	oklab(36.69% -0.0128 -0.117)
OKLCH	oklch(36.69% 0.118 263.7)
XYZ	xyz(5.6565, 4.7419, 19.6820)
Luminance	0.0474 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A7C #7C5F1D

analogous

#1D6A7C #1D3A7C #2F1D7C

triadic

#1D3A7C #7C1D3A #3A7C1D

tetradic

#1D3A7C #7C1D6A #7C5F1D #1D7C2F

square

#1D3A7C #7C1D6A #7C5F1D #1D7C2F

split-complementary

#1D3A7C #7C2F1D #6A7C1D

monochromatic

#060C19 #11234A #1D3A7C #2951AE #416DD3

Accessibility & contrast

On white

10.78

#1D3A7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.95

#1D3A7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A7C

10.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A7C	#FFFFFF	#000000	##FFFFFF
##1D3A7C	1.00	10.78	1.95	10.78
#FFFFFF	10.78	1.00	21.00	1.00
#000000	1.95	21.00	1.00	21.00
##FFFFFF	10.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#10427E

Deuteranopia (green-blind)

#00397B

Tritanopia (blue-blind)

#004A55

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #1d3a7c;
/* rgb */ color: rgb(29, 58, 124);
/* oklch */ color: oklch(36.7% 0.118 263.7);

Tailwind

colors: {
  custom: {
    50: '#676fa2',
    500: '#1d3a7c',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a7c;
$custom-light: #676fa2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a7c",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 124
  },
  "hsl": {
    "h": 221.684,
    "s": 62.092,
    "l": 30
  },
  "oklch": {
    "l": 0.36692,
    "c": 0.11774,
    "h": 263.7
  },
  "luminance": 0.04743
}

Semantic roles & 50–950 ramp

primary

#1D3A7C

secondary

#B08F45

accent

#B443E5

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #1D3A7C

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

Preview Lab → · Contrast checker → · Palette generator →