#1D2F8A#1D2F8A

#1D2F8A is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.6% C 0.152 H 268.5°. Best body text is #FFFFFF at 11.50:1 contrast (WCAG AA passes).

Color values

HEX	#1D2F8A
RGB	rgb(29, 47, 138)
HSL	hsl(230, 65%, 33%)
HSV	hsv(230, 79%, 54%)
CMYK	cmyk(79%, 65.9%, 0%, 45.9%)
CIE-LAB	lab(24.09, 27.48, -52.55)
CIE-LCH	lch(24.09, 59.30, 297.60°)
OKLab	oklab(35.64% -0.0041 -0.152)
OKLCH	oklch(35.64% 0.152 268.5)
XYZ	xyz(6.1091, 4.1285, 24.5147)
Luminance	0.0413 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D2F8A #8A781D

analogous

#1D658A #1D2F8A #421D8A

triadic

#1D2F8A #8A1D2F #2F8A1D

tetradic

#1D2F8A #8A1D65 #8A781D #1D8A42

square

#1D2F8A #8A1D65 #8A781D #1D8A42

split-complementary

#1D2F8A #8A421D #658A1D

monochromatic

#080D25 #121E57 #1D2F8A #2840BD #4960D9

Accessibility & contrast

On white

11.50

#1D2F8A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#1D2F8A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D2F8A

11.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D2F8A	#FFFFFF	#000000	##FFFFFF
##1D2F8A	1.00	11.50	1.83	11.50
#FFFFFF	11.50	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003F8D

Deuteranopia (green-blind)

#003488

Tritanopia (blue-blind)

#004758

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1d2f8a;
/* rgb */ color: rgb(29, 47, 138);
/* oklch */ color: oklch(35.6% 0.152 268.5);

Tailwind

colors: {
  custom: {
    50: '#6c67ad',
    500: '#1d2f8a',
    950: '#000000',
  },
}

SCSS

$custom: #1d2f8a;
$custom-light: #6c67ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d2f8a",
  "rgb": {
    "r": 29,
    "g": 47,
    "b": 138
  },
  "hsl": {
    "h": 230.092,
    "s": 65.269,
    "l": 32.745
  },
  "oklch": {
    "l": 0.35641,
    "c": 0.15206,
    "h": 268.5
  },
  "luminance": 0.04129
}

Semantic roles & 50–950 ramp

primary

#1D2F8A

secondary

#BBA848

accent

#CC40E8

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1D2F8A

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

Preview Lab → · Contrast checker → · Palette generator →