#1F2F87#1F2F87

#1F2F87 is a dark, vivid blue. Relative luminance 0.041; OKLCH L 35.4% C 0.147 H 269.2°. Best body text is #FFFFFF at 11.57:1 contrast (WCAG AA passes).

Color values

HEX	#1F2F87
RGB	rgb(31, 47, 135)
HSL	hsl(231, 63%, 33%)
HSV	hsv(231, 77%, 53%)
CMYK	cmyk(77%, 65.2%, 0%, 47.1%)
CIE-LAB	lab(23.91, 26.54, -50.97)
CIE-LCH	lch(23.91, 57.46, 297.50°)
OKLab	oklab(35.45% -0.002 -0.1473)
OKLCH	oklch(35.45% 0.147 269.2)
XYZ	xyz(5.9533, 4.0730, 23.3894)
Luminance	0.0407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F2F87 #87771F

analogous

#1F6387 #1F2F87 #431F87

triadic

#1F2F87 #871F2F #2F871F

tetradic

#1F2F87 #871F63 #87771F #1F8743

square

#1F2F87 #871F63 #87771F #1F8743

split-complementary

#1F2F87 #87431F #63871F

monochromatic

#080C23 #141E55 #1F2F87 #2A40B9 #4B60D6

Accessibility & contrast

On white

11.57

#1F2F87 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#1F2F87 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F2F87

11.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F2F87	#FFFFFF	#000000	##FFFFFF
##1F2F87	1.00	11.57	1.81	11.57
#FFFFFF	11.57	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003E8A

Deuteranopia (green-blind)

#003485

Tritanopia (blue-blind)

#004656

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #1f2f87;
/* rgb */ color: rgb(31, 47, 135);
/* oklch */ color: oklch(35.4% 0.147 269.2);

Tailwind

colors: {
  custom: {
    50: '#6c67ab',
    500: '#1f2f87',
    950: '#000000',
  },
}

SCSS

$custom: #1f2f87;
$custom-light: #6c67ab;
$custom-dark: #000000;

JSON

{
  "hex": "#1f2f87",
  "rgb": {
    "r": 31,
    "g": 47,
    "b": 135
  },
  "hsl": {
    "h": 230.769,
    "s": 62.651,
    "l": 32.549
  },
  "oklch": {
    "l": 0.35449,
    "c": 0.14736,
    "h": 269.2
  },
  "luminance": 0.04074
}

Semantic roles & 50–950 ramp

primary

#1F2F87

secondary

#B8A74A

accent

#CD42E6

background

#F7F6FA

surface

#EDEBF4

border

#C8C6CE

text

#080610

muted

#7B7A7F

Preview Lab

Preview with #1F2F87

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

Preview Lab → · Contrast checker → · Palette generator →