#1D238D#1D238D

#1D238D is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.9% C 0.170 H 270.7°. Best body text is #FFFFFF at 12.52:1 contrast (WCAG AA passes).

Color values

HEX	#1D238D
RGB	rgb(29, 35, 141)
HSL	hsl(237, 66%, 33%)
HSV	hsv(237, 79%, 55%)
CMYK	cmyk(79.4%, 75.2%, 0%, 44.7%)
CIE-LAB	lab(21.53, 36.37, -58.64)
CIE-LCH	lch(21.53, 69.00, 301.81°)
OKLab	oklab(33.88% 0.0019 -0.1698)
OKLCH	oklch(33.88% 0.17 270.7)
XYZ	xyz(5.9138, 3.3857, 25.5360)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D238D #8D871D

analogous

#1D5B8D #1D238D #4F1D8D

triadic

#1D238D #8D1D23 #238D1D

tetradic

#1D238D #8D1D5B #8D871D #1D8D4F

square

#1D238D #8D1D5B #8D871D #1D8D4F

split-complementary

#1D238D #8D4F1D #5B8D1D

monochromatic

#080A27 #13165A #1D238D #2730C0 #4B52DA

Accessibility & contrast

On white

12.52

#1D238D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#1D238D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D238D

12.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D238D	#FFFFFF	#000000	##FFFFFF
##1D238D	1.00	12.52	1.68	12.52
#FFFFFF	12.52	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003990

Deuteranopia (green-blind)

#002E8B

Tritanopia (blue-blind)

#004256

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #1d238d;
/* rgb */ color: rgb(29, 35, 141);
/* oklch */ color: oklch(33.9% 0.170 270.7);

Tailwind

colors: {
  custom: {
    50: '#6e5faf',
    500: '#1d238d',
    950: '#000000',
  },
}

SCSS

$custom: #1d238d;
$custom-light: #6e5faf;
$custom-dark: #000000;

JSON

{
  "hex": "#1d238d",
  "rgb": {
    "r": 29,
    "g": 35,
    "b": 141
  },
  "hsl": {
    "h": 236.786,
    "s": 65.882,
    "l": 33.333
  },
  "oklch": {
    "l": 0.33875,
    "c": 0.16981,
    "h": 270.7
  },
  "luminance": 0.03386
}

Semantic roles & 50–950 ramp

primary

#1D238D

secondary

#BCB64A

accent

#E03FE9

background

#F7F5FA

surface

#EDE9F5

border

#C8C5CF

text

#080411

muted

#7B7980

Preview Lab

Preview with #1D238D

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

Preview Lab → · Contrast checker → · Palette generator →