#1D3A98#1D3A98

#1D3A98 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.1% C 0.158 H 266.0°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#1D3A98
RGB	rgb(29, 58, 152)
HSL	hsl(226, 68%, 35%)
HSV	hsv(226, 81%, 60%)
CMYK	cmyk(80.9%, 61.8%, 0%, 40.4%)
CIE-LAB	lab(28.26, 25.45, -54.37)
CIE-LCH	lch(28.26, 60.03, 295.09°)
OKLab	oklab(39.11% -0.0111 -0.1572)
OKLCH	oklch(39.11% 0.158 266)
XYZ	xyz(7.6853, 5.5534, 30.3665)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D3A98 #987B1D

analogous

#1D7798 #1D3A98 #3E1D98

triadic

#1D3A98 #981D3A #3A981D

tetradic

#1D3A98 #981D77 #987B1D #1D983E

square

#1D3A98 #981D77 #987B1D #1D983E

split-complementary

#1D3A98 #983E1D #77981D

monochromatic

#091331 #132665 #1D3A98 #274ECB #5273DE

Accessibility & contrast

On white

9.95

#1D3A98 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#1D3A98 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D3A98

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D3A98	#FFFFFF	#000000	##FFFFFF
##1D3A98	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00499B

Deuteranopia (green-blind)

#003D96

Tritanopia (blue-blind)

#005263

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #1d3a98;
/* rgb */ color: rgb(29, 58, 152);
/* oklch */ color: oklch(39.1% 0.158 266.0);

Tailwind

colors: {
  custom: {
    50: '#6f6fb7',
    500: '#1d3a98',
    950: '#000000',
  },
}

SCSS

$custom: #1d3a98;
$custom-light: #6f6fb7;
$custom-dark: #000000;

JSON

{
  "hex": "#1d3a98",
  "rgb": {
    "r": 29,
    "g": 58,
    "b": 152
  },
  "hsl": {
    "h": 225.854,
    "s": 67.956,
    "l": 35.49
  },
  "oklch": {
    "l": 0.39112,
    "c": 0.1576,
    "h": 266
  },
  "luminance": 0.05554
}

Semantic roles & 50–950 ramp

primary

#1D3A98

secondary

#C1A650

accent

#C23DEB

background

#F7F6FB

surface

#EDECF6

border

#C8C7D0

text

#090711

muted

#7B7A80

Preview Lab

Preview with #1D3A98

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

Preview Lab → · Contrast checker → · Palette generator →