#1D438B#1D438B

#1D438B is a dark, vivid blue. Relative luminance 0.061; OKLCH L 39.9% C 0.128 H 261.6°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#1D438B
RGB	rgb(29, 67, 139)
HSL	hsl(219, 65%, 33%)
HSV	hsv(219, 79%, 55%)
CMYK	cmyk(79.1%, 51.8%, 0%, 45.5%)
CIE-LAB	lab(29.76, 14.05, -43.94)
CIE-LCH	lch(29.76, 46.13, 287.73°)
OKLab	oklab(39.92% -0.0186 -0.1264)
OKLCH	oklch(39.92% 0.128 261.6)
XYZ	xyz(7.1724, 6.1388, 25.2280)
Luminance	0.0614 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D438B #8B651D

analogous

#1D7A8B #1D438B #2E1D8B

triadic

#1D438B #8B1D43 #438B1D

tetradic

#1D438B #8B1D7A #8B651D #1D8B2E

square

#1D438B #8B1D7A #8B651D #1D8B2E

split-complementary

#1D438B #8B2E1D #7A8B1D

monochromatic

#081226 #122B58 #1D438B #285BBE #497BD9

Accessibility & contrast

On white

9.43

#1D438B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#1D438B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D438B

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D438B	#FFFFFF	#000000	##FFFFFF
##1D438B	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#164B8E

Deuteranopia (green-blind)

#00418A

Tritanopia (blue-blind)

#005460

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #1d438b;
/* rgb */ color: rgb(29, 67, 139);
/* oklch */ color: oklch(39.9% 0.128 261.6);

Tailwind

colors: {
  custom: {
    50: '#6b76ad',
    500: '#1d438b',
    950: '#000000',
  },
}

SCSS

$custom: #1d438b;
$custom-light: #6b76ad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d438b",
  "rgb": {
    "r": 29,
    "g": 67,
    "b": 139
  },
  "hsl": {
    "h": 219.273,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.39921,
    "c": 0.12779,
    "h": 261.6
  },
  "luminance": 0.0614
}

Semantic roles & 50–950 ramp

primary

#1D438B

secondary

#BB9449

accent

#AE3FE8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080810

muted

#7A7B7F

Preview Lab

Preview with #1D438B

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

Preview Lab → · Contrast checker → · Palette generator →