#1D289E#1D289E

#1D289E is a dark, vivid blue. Relative luminance 0.042; OKLCH L 36.5% C 0.186 H 269.2°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#1D289E
RGB	rgb(29, 40, 158)
HSL	hsl(235, 69%, 37%)
HSV	hsv(235, 82%, 62%)
CMYK	cmyk(81.6%, 74.7%, 0%, 38%)
CIE-LAB	lab(24.47, 39.40, -64.25)
CIE-LCH	lch(24.47, 75.37, 301.51°)
OKLab	oklab(36.53% -0.0026 -0.1862)
OKLCH	oklch(36.53% 0.186 269.2)
XYZ	xyz(7.4349, 4.2465, 32.7689)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D289E #9E931D

analogous

#1D699E #1D289E #531D9E

triadic

#1D289E #9E1D28 #289E1D

tetradic

#1D289E #9E1D69 #9E931D #1D9E53

square

#1D289E #9E1D69 #9E931D #1D9E53

split-complementary

#1D289E #9E531D #699E1D

monochromatic

#0A0E37 #141B6A #1D289E #2635D2 #5661E0

Accessibility & contrast

On white

11.36

#1D289E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#1D289E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D289E

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D289E	#FFFFFF	#000000	##FFFFFF
##1D289E	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0040A1

Deuteranopia (green-blind)

#00349C

Tritanopia (blue-blind)

#004A61

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #1d289e;
/* rgb */ color: rgb(29, 40, 158);
/* oklch */ color: oklch(36.5% 0.186 269.2);

Tailwind

colors: {
  custom: {
    50: '#7263bc',
    500: '#1d289e',
    950: '#000000',
  },
}

SCSS

$custom: #1d289e;
$custom-light: #7263bc;
$custom-dark: #000000;

JSON

{
  "hex": "#1d289e",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 158
  },
  "hsl": {
    "h": 234.884,
    "s": 68.984,
    "l": 36.667
  },
  "oklch": {
    "l": 0.36527,
    "c": 0.18618,
    "h": 269.2
  },
  "luminance": 0.04247
}

Semantic roles & 50–950 ramp

primary

#1D289E

secondary

#C3BA54

accent

#DD3CEC

background

#F7F5FB

surface

#EEEAF7

border

#C9C6D0

text

#090512

muted

#7B7981

Preview Lab

Preview with #1D289E

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

Preview Lab → · Contrast checker → · Palette generator →