#1D28A6#1D28A6

#1D28A6 is a dark, vivid blue. Relative luminance 0.045; OKLCH L 37.4% C 0.196 H 268.9°. Best body text is #FFFFFF at 11.02:1 contrast (WCAG AA passes).

Color values

HEX	#1D28A6
RGB	rgb(29, 40, 166)
HSL	hsl(235, 70%, 38%)
HSV	hsv(235, 83%, 65%)
CMYK	cmyk(82.5%, 75.9%, 0%, 34.9%)
CIE-LAB	lab(25.35, 42.20, -67.65)
CIE-LCH	lch(25.35, 79.73, 301.95°)
OKLab	oklab(37.42% -0.0037 -0.196)
OKLCH	oklch(37.42% 0.196 268.9)
XYZ	xyz(8.1461, 4.5310, 36.5142)
Luminance	0.0453 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D28A6 #A69B1D

analogous

#1D6DA6 #1D28A6 #561DA6

triadic

#1D28A6 #A61D28 #28A61D

tetradic

#1D28A6 #A61D6D #A69B1D #1DA656

square

#1D28A6 #A61D6D #A69B1D #1DA656

split-complementary

#1D28A6 #A6561D #6DA61D

monochromatic

#0B0F3E #141B72 #1D28A6 #2735D9 #5B66E2

Accessibility & contrast

On white

11.02

#1D28A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.91

#1D28A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D28A6

11.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D28A6	#FFFFFF	#000000	##FFFFFF
##1D28A6	1.00	11.02	1.91	11.02
#FFFFFF	11.02	1.00	21.00	1.00
#000000	1.91	21.00	1.00	21.00
##FFFFFF	11.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0043AA

Deuteranopia (green-blind)

#0035A4

Tritanopia (blue-blind)

#004D65

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1d28a6;
/* rgb */ color: rgb(29, 40, 166);
/* oklch */ color: oklch(37.4% 0.196 268.9);

Tailwind

colors: {
  custom: {
    50: '#7463c2',
    500: '#1d28a6',
    950: '#000000',
  },
}

SCSS

$custom: #1d28a6;
$custom-light: #7463c2;
$custom-dark: #000000;

JSON

{
  "hex": "#1d28a6",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 166
  },
  "hsl": {
    "h": 235.182,
    "s": 70.256,
    "l": 38.235
  },
  "oklch": {
    "l": 0.37418,
    "c": 0.19607,
    "h": 268.9
  },
  "luminance": 0.04532
}

Semantic roles & 50–950 ramp

primary

#1D28A6

secondary

#C6BD59

accent

#DF3BED

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #1D28A6

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

Preview Lab → · Contrast checker → · Palette generator →