#1D389B#1D389B

#1D389B is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.0% C 0.164 H 266.5°. Best body text is #FFFFFF at 10.04:1 contrast (WCAG AA passes).

Color values

HEX	#1D389B
RGB	rgb(29, 56, 155)
HSL	hsl(227, 68%, 36%)
HSV	hsv(227, 81%, 61%)
CMYK	cmyk(81.3%, 63.9%, 0%, 39.2%)
CIE-LAB	lab(27.99, 27.98, -56.63)
CIE-LCH	lch(27.99, 63.16, 296.29°)
OKLab	oklab(39% -0.0099 -0.1639)
OKLCH	oklch(39% 0.164 266.5)
XYZ	xyz(7.8352, 5.4552, 31.6440)
Luminance	0.0546 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D389B #9B801D

analogous

#1D779B #1D389B #411D9B

triadic

#1D389B #9B1D38 #389B1D

tetradic

#1D389B #9B1D77 #9B801D #1D9B41

square

#1D389B #9B1D77 #9B801D #1D9B41

split-complementary

#1D389B #9B411D #779B1D

monochromatic

#0A1334 #132567 #1D389B #274BCF #5371DF

Accessibility & contrast

On white

10.04

#1D389B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#1D389B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D389B

10.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D389B	#FFFFFF	#000000	##FFFFFF
##1D389B	1.00	10.04	2.09	10.04
#FFFFFF	10.04	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00489E

Deuteranopia (green-blind)

#003C99

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #1d389b;
/* rgb */ color: rgb(29, 56, 155);
/* oklch */ color: oklch(39.0% 0.164 266.5);

Tailwind

colors: {
  custom: {
    50: '#706eb9',
    500: '#1d389b',
    950: '#000000',
  },
}

SCSS

$custom: #1d389b;
$custom-light: #706eb9;
$custom-dark: #000000;

JSON

{
  "hex": "#1d389b",
  "rgb": {
    "r": 29,
    "g": 56,
    "b": 155
  },
  "hsl": {
    "h": 227.143,
    "s": 68.478,
    "l": 36.078
  },
  "oklch": {
    "l": 0.39,
    "c": 0.16416,
    "h": 266.5
  },
  "luminance": 0.05456
}

Semantic roles & 50–950 ramp

primary

#1D389B

secondary

#C2AA52

accent

#C63CEB

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1D389B

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

Preview Lab → · Contrast checker → · Palette generator →