#1D28A0#1D28A0

#1D28A0 is a dark, vivid blue. Relative luminance 0.043; OKLCH L 36.7% C 0.189 H 269.1°. Best body text is #FFFFFF at 11.27:1 contrast (WCAG AA passes).

Color values

HEX	#1D28A0
RGB	rgb(29, 40, 160)
HSL	hsl(235, 69%, 37%)
HSV	hsv(235, 82%, 63%)
CMYK	cmyk(81.9%, 75%, 0%, 37.3%)
CIE-LAB	lab(24.69, 40.10, -65.11)
CIE-LCH	lch(24.69, 76.47, 301.63°)
OKLab	oklab(36.75% -0.0029 -0.1887)
OKLCH	oklch(36.75% 0.189 269.1)
XYZ	xyz(7.6085, 4.3160, 33.6830)
Luminance	0.0432 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1D28A0 #A0951D

analogous

#1D6AA0 #1D28A0 #541DA0

triadic

#1D28A0 #A01D28 #28A01D

tetradic

#1D28A0 #A01D6A #A0951D #1DA054

square

#1D28A0 #A01D6A #A0951D #1DA054

split-complementary

#1D28A0 #A0541D #6AA01D

monochromatic

#0A0E38 #141B6C #1D28A0 #2635D4 #5762E1

Accessibility & contrast

On white

11.27

#1D28A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#1D28A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1D28A0

11.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1D28A0	#FFFFFF	#000000	##FFFFFF
##1D28A0	1.00	11.27	1.86	11.27
#FFFFFF	11.27	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0041A4

Deuteranopia (green-blind)

#00349E

Tritanopia (blue-blind)

#004B62

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #1d28a0;
/* rgb */ color: rgb(29, 40, 160);
/* oklch */ color: oklch(36.7% 0.189 269.1);

Tailwind

colors: {
  custom: {
    50: '#7363bd',
    500: '#1d28a0',
    950: '#000000',
  },
}

SCSS

$custom: #1d28a0;
$custom-light: #7363bd;
$custom-dark: #000000;

JSON

{
  "hex": "#1d28a0",
  "rgb": {
    "r": 29,
    "g": 40,
    "b": 160
  },
  "hsl": {
    "h": 234.962,
    "s": 69.312,
    "l": 37.059
  },
  "oklch": {
    "l": 0.36749,
    "c": 0.18867,
    "h": 269.1
  },
  "luminance": 0.04317
}

Semantic roles & 50–950 ramp

primary

#1D28A0

secondary

#C4BB55

accent

#DD3CEC

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #1D28A0

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

Preview Lab → · Contrast checker → · Palette generator →