#1D4288#1D4288

#1D4288 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 39.5% C 0.125 H 261.6°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#1D4288
RGB	rgb(29, 66, 136)
HSL	hsl(219, 65%, 32%)
HSV	hsv(219, 79%, 53%)
CMYK	cmyk(78.7%, 51.5%, 0%, 46.7%)
CIE-LAB	lab(29.25, 13.52, -42.92)
CIE-LCH	lch(29.25, 45.00, 287.49°)
OKLab	oklab(39.46% -0.0182 -0.1234)
OKLCH	oklch(39.46% 0.125 261.6)
XYZ	xyz(6.8972, 5.9344, 24.0697)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D4288 #88631D

analogous

#1D7888 #1D4288 #2D1D88

triadic

#1D4288 #881D42 #42881D

tetradic

#1D4288 #881D78 #88631D #1D882D

square

#1D4288 #881D78 #88631D #1D882D

split-complementary

#1D4288 #882D1D #78881D

monochromatic

#071123 #122A56 #1D4288 #285ABA #4879D8

Accessibility & contrast

On white

9.60

#1D4288 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#1D4288 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D4288

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D4288	#FFFFFF	#000000	##FFFFFF
##1D4288	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#174A8B

Deuteranopia (green-blind)

#004087

Tritanopia (blue-blind)

#00535E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #1d4288;
/* rgb */ color: rgb(29, 66, 136);
/* oklch */ color: oklch(39.5% 0.125 261.6);

Tailwind

colors: {
  custom: {
    50: '#6a75ab',
    500: '#1d4288',
    950: '#000000',
  },
}

SCSS

$custom: #1d4288;
$custom-light: #6a75ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1d4288",
  "rgb": {
    "r": 29,
    "g": 66,
    "b": 136
  },
  "hsl": {
    "h": 219.252,
    "s": 64.848,
    "l": 32.353
  },
  "oklch": {
    "l": 0.39459,
    "c": 0.12476,
    "h": 261.6
  },
  "luminance": 0.05935
}

Semantic roles & 50–950 ramp

primary

#1D4288

secondary

#BA9247

accent

#AE40E8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#070810

muted

#7A7B7F

Preview Lab

Preview with #1D4288

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

Preview Lab → · Contrast checker → · Palette generator →