#1F3EA8#1F3EA8

#1F3EA8 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.4% C 0.174 H 266.1°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#1F3EA8
RGB	rgb(31, 62, 168)
HSL	hsl(226, 69%, 39%)
HSV	hsv(226, 82%, 66%)
CMYK	cmyk(81.5%, 63.1%, 0%, 34.1%)
CIE-LAB	lab(30.79, 29.16, -59.91)
CIE-LCH	lch(30.79, 66.63, 295.95°)
OKLab	oklab(41.45% -0.0119 -0.1734)
OKLCH	oklch(41.45% 0.174 266.1)
XYZ	xyz(9.3531, 6.5626, 37.8120)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F3EA8 #A8891F

analogous

#1F83A8 #1F3EA8 #441FA8

triadic

#1F3EA8 #A81F3E #3EA81F

tetradic

#1F3EA8 #A81F83 #A8891F #1FA844

square

#1F3EA8 #A81F83 #A8891F #1FA844

split-complementary

#1F3EA8 #A8441F #83A81F

monochromatic

#0C1841 #152B74 #1F3EA8 #2C53D8 #607DE2

Accessibility & contrast

On white

9.08

#1F3EA8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#1F3EA8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F3EA8

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F3EA8	#FFFFFF	#000000	##FFFFFF
##1F3EA8	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FAB

Deuteranopia (green-blind)

#0042A6

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #1f3ea8;
/* rgb */ color: rgb(31, 62, 168);
/* oklch */ color: oklch(41.4% 0.174 266.1);

Tailwind

colors: {
  custom: {
    50: '#7373c3',
    500: '#1f3ea8',
    950: '#000000',
  },
}

SCSS

$custom: #1f3ea8;
$custom-light: #7373c3;
$custom-dark: #000000;

JSON

{
  "hex": "#1f3ea8",
  "rgb": {
    "r": 31,
    "g": 62,
    "b": 168
  },
  "hsl": {
    "h": 226.423,
    "s": 68.844,
    "l": 39.02
  },
  "oklch": {
    "l": 0.41448,
    "c": 0.17378,
    "h": 266.1
  },
  "luminance": 0.06564
}

Semantic roles & 50–950 ramp

primary

#1F3EA8

secondary

#C6AE5D

accent

#C43CEC

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1F3EA8

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

Preview Lab → · Contrast checker → · Palette generator →