#1D488B#1D488B

#1D488B is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.1% C 0.121 H 259.2°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#1D488B
RGB	rgb(29, 72, 139)
HSL	hsl(217, 65%, 33%)
HSV	hsv(217, 79%, 55%)
CMYK	cmyk(79.1%, 48.2%, 0%, 45.5%)
CIE-LAB	lab(31.25, 10.62, -41.54)
CIE-LCH	lch(31.25, 42.87, 284.34°)
OKLab	oklab(41.07% -0.0228 -0.1192)
OKLCH	oklch(41.07% 0.121 259.2)
XYZ	xyz(7.4826, 6.7592, 25.3314)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D488B #8B601D

analogous

#1D7F8B #1D488B #291D8B

triadic

#1D488B #8B1D48 #488B1D

tetradic

#1D488B #8B1D7F #8B601D #1D8B29

square

#1D488B #8B1D7F #8B601D #1D8B29

split-complementary

#1D488B #8B291D #7F8B1D

monochromatic

#081426 #122E58 #1D488B #2862BE #4982D9

Accessibility & contrast

On white

8.93

#1D488B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1D488B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D488B

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D488B	#FFFFFF	#000000	##FFFFFF
##1D488B	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234F8E

Deuteranopia (green-blind)

#05458A

Tritanopia (blue-blind)

#005862

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1d488b;
/* rgb */ color: rgb(29, 72, 139);
/* oklch */ color: oklch(41.1% 0.121 259.2);

Tailwind

colors: {
  custom: {
    50: '#6b7aad',
    500: '#1d488b',
    950: '#000000',
  },
}

SCSS

$custom: #1d488b;
$custom-light: #6b7aad;
$custom-dark: #000000;

JSON

{
  "hex": "#1d488b",
  "rgb": {
    "r": 29,
    "g": 72,
    "b": 139
  },
  "hsl": {
    "h": 216.545,
    "s": 65.476,
    "l": 32.941
  },
  "oklch": {
    "l": 0.41065,
    "c": 0.12141,
    "h": 259.2
  },
  "luminance": 0.0676
}

Semantic roles & 50–950 ramp

primary

#1D488B

secondary

#BB8E49

accent

#A63FE8

background

#F6F7FA

surface

#ECEDF4

border

#C7C8CE

text

#080910

muted

#7A7B7F

Preview Lab

Preview with #1D488B

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

Preview Lab → · Contrast checker → · Palette generator →