#1F29A8#1F29A8

#1F29A8 is a dark, vivid blue. Relative luminance 0.047; OKLCH L 37.9% C 0.197 H 269.3°. Best body text is #FFFFFF at 10.82:1 contrast (WCAG AA passes).

Color values

HEX	#1F29A8
RGB	rgb(31, 41, 168)
HSL	hsl(236, 69%, 39%)
HSV	hsv(236, 82%, 66%)
CMYK	cmyk(81.5%, 75.6%, 0%, 34.1%)
CIE-LAB	lab(25.87, 42.44, -68.00)
CIE-LCH	lch(25.87, 80.16, 301.97°)
OKLab	oklab(37.88% -0.0025 -0.197)
OKLCH	oklch(37.88% 0.197 269.3)
XYZ	xyz(8.4235, 4.7034, 37.5021)
Luminance	0.0470 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F29A8 #A89E1F

analogous

#1F6EA8 #1F29A8 #591FA8

triadic

#1F29A8 #A81F29 #29A81F

tetradic

#1F29A8 #A81F6E #A89E1F #1FA859

square

#1F29A8 #A81F6E #A89E1F #1FA859

split-complementary

#1F29A8 #A8591F #6EA81F

monochromatic

#0C1041 #151C74 #1F29A8 #2C39D8 #6069E2

Accessibility & contrast

On white

10.82

#1F29A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#1F29A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F29A8

10.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F29A8	#FFFFFF	#000000	##FFFFFF
##1F29A8	1.00	10.82	1.94	10.82
#FFFFFF	10.82	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0044AC

Deuteranopia (green-blind)

#0036A6

Tritanopia (blue-blind)

#004F67

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #1f29a8;
/* rgb */ color: rgb(31, 41, 168);
/* oklch */ color: oklch(37.9% 0.197 269.3);

Tailwind

colors: {
  custom: {
    50: '#7564c3',
    500: '#1f29a8',
    950: '#000000',
  },
}

SCSS

$custom: #1f29a8;
$custom-light: #7564c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f29a8",
  "rgb": {
    "r": 31,
    "g": 41,
    "b": 168
  },
  "hsl": {
    "h": 235.62,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.37876,
    "c": 0.19703,
    "h": 269.3
  },
  "luminance": 0.04704
}

Semantic roles & 50–950 ramp

primary

#1F29A8

secondary

#C6BF5D

accent

#DF3CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0513

muted

#7C7A82

Preview Lab

Preview with #1F29A8

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

Preview Lab → · Contrast checker → · Palette generator →