#1F2FA9#1F2FA9

#1F2FA9 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.9% C 0.192 H 268.6°. Best body text is #FFFFFF at 10.31:1 contrast (WCAG AA passes).

Color values

HEX	#1F2FA9
RGB	rgb(31, 47, 169)
HSL	hsl(233, 69%, 39%)
HSV	hsv(233, 82%, 66%)
CMYK	cmyk(81.7%, 72.2%, 0%, 33.7%)
CIE-LAB	lab(27.26, 39.21, -66.30)
CIE-LCH	lch(27.26, 77.03, 300.60°)
OKLab	oklab(38.9% -0.0048 -0.1921)
OKLCH	oklch(38.9% 0.192 268.6)
XYZ	xyz(8.7406, 5.1879, 38.0691)
Luminance	0.0519 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2FA9 #A9991F

analogous

#1F74A9 #1F2FA9 #541FA9

triadic

#1F2FA9 #A91F2F #2FA91F

tetradic

#1F2FA9 #A91F74 #A9991F #1FA954

square

#1F2FA9 #A91F74 #A9991F #1FA954

split-complementary

#1F2FA9 #A9541F #74A91F

monochromatic

#0C1242 #162175 #1F2FA9 #2D41D8 #606FE2

Accessibility & contrast

On white

10.31

#1F2FA9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.04

#1F2FA9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2FA9

10.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2FA9	#FFFFFF	#000000	##FFFFFF
##1F2FA9	1.00	10.31	2.04	10.31
#FFFFFF	10.31	1.00	21.00	1.00
#000000	2.04	21.00	1.00	21.00
##FFFFFF	10.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AD

Deuteranopia (green-blind)

#003AA7

Tritanopia (blue-blind)

#005269

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f2fa9;
/* rgb */ color: rgb(31, 47, 169);
/* oklch */ color: oklch(38.9% 0.192 268.6);

Tailwind

colors: {
  custom: {
    50: '#7568c4',
    500: '#1f2fa9',
    950: '#000000',
  },
}

SCSS

$custom: #1f2fa9;
$custom-light: #7568c4;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2fa9",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 169
  },
  "hsl": {
    "h": 233.043,
    "s": 69,
    "l": 39.216
  },
  "oklch": {
    "l": 0.38902,
    "c": 0.19218,
    "h": 268.6
  },
  "luminance": 0.05189
}

Semantic roles & 50–950 ramp

primary

#1F2FA9

secondary

#C7BA5D

accent

#D73CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #1F2FA9

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

Preview Lab → · Contrast checker → · Palette generator →