#1F2FA8#1F2FA8

#1F2FA8 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 38.8% C 0.191 H 268.6°. Best body text is #FFFFFF at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#1F2FA8
RGB	rgb(31, 47, 168)
HSL	hsl(233, 69%, 39%)
HSV	hsv(233, 82%, 66%)
CMYK	cmyk(81.5%, 72%, 0%, 34.1%)
CIE-LAB	lab(27.16, 38.85, -65.87)
CIE-LCH	lch(27.16, 76.47, 300.53°)
OKLab	oklab(38.8% -0.0046 -0.1909)
OKLCH	oklch(38.8% 0.191 268.6)
XYZ	xyz(8.6470, 5.1505, 37.5766)
Luminance	0.0515 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2FA8 #A8981F

analogous

#1F74A8 #1F2FA8 #541FA8

triadic

#1F2FA8 #A81F2F #2FA81F

tetradic

#1F2FA8 #A81F74 #A8981F #1FA854

square

#1F2FA8 #A81F74 #A8981F #1FA854

split-complementary

#1F2FA8 #A8541F #74A81F

monochromatic

#0C1241 #152174 #1F2FA8 #2C40D8 #606FE2

Accessibility & contrast

On white

10.34

#1F2FA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.03

#1F2FA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2FA8

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2FA8	#FFFFFF	#000000	##FFFFFF
##1F2FA8	1.00	10.34	2.03	10.34
#FFFFFF	10.34	1.00	21.00	1.00
#000000	2.03	21.00	1.00	21.00
##FFFFFF	10.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047AC

Deuteranopia (green-blind)

#0039A6

Tritanopia (blue-blind)

#005168

Achromatopsia (no color)

#404040

Design tokens & code

CSS

--color: #1f2fa8;
/* rgb */ color: rgb(31, 47, 168);
/* oklch */ color: oklch(38.8% 0.191 268.6);

Tailwind

colors: {
  custom: {
    50: '#7568c3',
    500: '#1f2fa8',
    950: '#000000',
  },
}

SCSS

$custom: #1f2fa8;
$custom-light: #7568c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2fa8",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 168
  },
  "hsl": {
    "h": 232.993,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.38796,
    "c": 0.19093,
    "h": 268.6
  },
  "luminance": 0.05151
}

Semantic roles & 50–950 ramp

primary

#1F2FA8

secondary

#C6BA5D

accent

#D73CEC

background

#F7F6FC

surface

#EEEBF8

border

#C9C6D1

text

#0A0613

muted

#7C7A82

Preview Lab

Preview with #1F2FA8

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

Preview Lab → · Contrast checker → · Palette generator →