#1F2A8D#1F2A8D

#1F2A8D is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.1% C 0.162 H 270.2°. Best body text is #FFFFFF at 11.84:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A8D
RGB	rgb(31, 42, 141)
HSL	hsl(234, 64%, 34%)
HSV	hsv(234, 78%, 55%)
CMYK	cmyk(78%, 70.2%, 0%, 44.7%)
CIE-LAB	lab(23.24, 32.15, -55.82)
CIE-LCH	lch(23.24, 64.41, 299.94°)
OKLab	oklab(35.13% 0.0006 -0.1615)
OKLCH	oklch(35.13% 0.162 270.2)
XYZ	xyz(6.1991, 3.8696, 25.6143)
Luminance	0.0387 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A8D #8D821F

analogous

#1F618D #1F2A8D #4B1F8D

triadic

#1F2A8D #8D1F2A #2A8D1F

tetradic

#1F2A8D #8D1F61 #8D821F #1F8D4B

square

#1F2A8D #8D1F61 #8D821F #1F8D4B

split-complementary

#1F2A8D #8D4B1F #618D1F

monochromatic

#090C29 #141B5B #1F2A8D #2A39BF #4E5CD8

Accessibility & contrast

On white

11.84

#1F2A8D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.77

#1F2A8D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A8D

11.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A8D	#FFFFFF	#000000	##FFFFFF
##1F2A8D	1.00	11.84	1.77	11.84
#FFFFFF	11.84	1.00	21.00	1.00
#000000	1.77	21.00	1.00	21.00
##FFFFFF	11.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D90

Deuteranopia (green-blind)

#00328B

Tritanopia (blue-blind)

#004558

Achromatopsia (no color)

#373737

Design tokens & code

CSS

--color: #1f2a8d;
/* rgb */ color: rgb(31, 42, 141);
/* oklch */ color: oklch(35.1% 0.162 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e64af',
    500: '#1f2a8d',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a8d;
$custom-light: #6e64af;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a8d",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 141
  },
  "hsl": {
    "h": 234,
    "s": 63.953,
    "l": 33.725
  },
  "oklch": {
    "l": 0.35132,
    "c": 0.16155,
    "h": 270.2
  },
  "luminance": 0.0387
}

Semantic roles & 50–950 ramp

primary

#1F2A8D

secondary

#BBB04D

accent

#D641E7

background

#F7F6FA

surface

#EDEBF5

border

#C8C6CF

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1F2A8D

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

Preview Lab → · Contrast checker → · Palette generator →