#1F2A8E#1F2A8E

#1F2A8E is a dark, vivid blue. Relative luminance 0.039; OKLCH L 35.2% C 0.163 H 270.2°. Best body text is #FFFFFF at 11.80:1 contrast (WCAG AA passes).

Color values

HEX	#1F2A8E
RGB	rgb(31, 42, 142)
HSL	hsl(234, 64%, 34%)
HSV	hsv(234, 78%, 56%)
CMYK	cmyk(78.2%, 70.4%, 0%, 44.3%)
CIE-LAB	lab(23.34, 32.52, -56.27)
CIE-LCH	lch(23.34, 64.99, 300.02°)
OKLab	oklab(35.24% 0.0005 -0.1629)
OKLCH	oklch(35.24% 0.163 270.2)
XYZ	xyz(6.2739, 3.8995, 26.0080)
Luminance	0.0390 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2A8E #8E831F

analogous

#1F628E #1F2A8E #4C1F8E

triadic

#1F2A8E #8E1F2A #2A8E1F

tetradic

#1F2A8E #8E1F62 #8E831F #1F8E4C

square

#1F2A8E #8E1F62 #8E831F #1F8E4C

split-complementary

#1F2A8E #8E4C1F #628E1F

monochromatic

#090C2A #141B5C #1F2A8E #2A39C0 #4F5DD9

Accessibility & contrast

On white

11.80

#1F2A8E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.78

#1F2A8E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2A8E

11.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2A8E	#FFFFFF	#000000	##FFFFFF
##1F2A8E	1.00	11.80	1.78	11.80
#FFFFFF	11.80	1.00	21.00	1.00
#000000	1.78	21.00	1.00	21.00
##FFFFFF	11.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003D91

Deuteranopia (green-blind)

#00328C

Tritanopia (blue-blind)

#004658

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #1f2a8e;
/* rgb */ color: rgb(31, 42, 142);
/* oklch */ color: oklch(35.2% 0.163 270.2);

Tailwind

colors: {
  custom: {
    50: '#6e64b0',
    500: '#1f2a8e',
    950: '#000000',
  },
}

SCSS

$custom: #1f2a8e;
$custom-light: #6e64b0;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2a8e",
  "rgb": {
    "r": 31,
    "g": 42,
    "b": 142
  },
  "hsl": {
    "h": 234.054,
    "s": 64.162,
    "l": 33.922
  },
  "oklch": {
    "l": 0.35236,
    "c": 0.16288,
    "h": 270.2
  },
  "luminance": 0.039
}

Semantic roles & 50–950 ramp

primary

#1F2A8E

secondary

#BBB14D

accent

#D741E7

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#080511

muted

#7B7A80

Preview Lab

Preview with #1F2A8E

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

Preview Lab → · Contrast checker → · Palette generator →