#1F29A1#1F29A1

#1F29A1 is a dark, vivid blue. Relative luminance 0.044; OKLCH L 37.1% C 0.188 H 269.6°. Best body text is #FFFFFF at 11.11:1 contrast (WCAG AA passes).

Color values

HEX	#1F29A1
RGB	rgb(31, 41, 161)
HSL	hsl(235, 68%, 38%)
HSV	hsv(235, 81%, 63%)
CMYK	cmyk(80.7%, 74.5%, 0%, 36.9%)
CIE-LAB	lab(25.11, 40.00, -65.03)
CIE-LCH	lch(25.11, 76.35, 301.60°)
OKLab	oklab(37.1% -0.0014 -0.1884)
OKLCH	oklch(37.1% 0.188 269.6)
XYZ	xyz(7.7888, 4.4495, 34.1596)
Luminance	0.0445 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F29A1 #A1971F

analogous

#1F6AA1 #1F29A1 #561FA1

triadic

#1F29A1 #A11F29 #29A11F

tetradic

#1F29A1 #A11F6A #A1971F #1FA156

square

#1F29A1 #A11F6A #A1971F #1FA156

split-complementary

#1F29A1 #A1561F #6AA11F

monochromatic

#0B0F3A #151C6E #1F29A1 #2936D4 #5B65DF

Accessibility & contrast

On white

11.11

#1F29A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#1F29A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F29A1

11.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F29A1	#FFFFFF	#000000	##FFFFFF
##1F29A1	1.00	11.11	1.89	11.11
#FFFFFF	11.11	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0042A5

Deuteranopia (green-blind)

#00359F

Tritanopia (blue-blind)

#004C63

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #1f29a1;
/* rgb */ color: rgb(31, 41, 161);
/* oklch */ color: oklch(37.1% 0.188 269.6);

Tailwind

colors: {
  custom: {
    50: '#7364be',
    500: '#1f29a1',
    950: '#000000',
  },
}

SCSS

$custom: #1f29a1;
$custom-light: #7364be;
$custom-dark: #000000;

JSON

{
  "hex": "#1f29a1",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 161
  },
  "hsl": {
    "h": 235.385,
    "s": 67.708,
    "l": 37.647
  },
  "oklch": {
    "l": 0.37103,
    "c": 0.18839,
    "h": 269.6
  },
  "luminance": 0.0445
}

Semantic roles & 50–950 ramp

primary

#1F29A1

secondary

#C4BB58

accent

#DD3DEB

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0512

muted

#7C7A81

Preview Lab

Preview with #1F29A1

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

Preview Lab → · Contrast checker → · Palette generator →