#1F359E#1F359E

#1F359E is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.8% C 0.171 H 267.8°. Best body text is #FFFFFF at 10.19:1 contrast (WCAG AA passes).

Color values

HEX	#1F359E
RGB	rgb(31, 53, 158)
HSL	hsl(230, 67%, 37%)
HSV	hsv(230, 80%, 62%)
CMYK	cmyk(80.4%, 66.5%, 0%, 38%)
CIE-LAB	lab(27.59, 31.32, -59.12)
CIE-LCH	lch(27.59, 66.90, 297.91°)
OKLab	oklab(38.81% -0.0066 -0.1711)
OKLCH	oklch(38.81% 0.171 267.8)
XYZ	xyz(8.0076, 5.3052, 32.9431)
Luminance	0.0531 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F359E #9E881F

analogous

#1F759E #1F359E #481F9E

triadic

#1F359E #9E1F35 #359E1F

tetradic

#1F359E #9E1F75 #9E881F #1F9E48

square

#1F359E #9E1F75 #9E881F #1F9E48

split-complementary

#1F359E #9E481F #759E1F

monochromatic

#0B1338 #15246B #1F359E #2946D1 #5970DE

Accessibility & contrast

On white

10.19

#1F359E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#1F359E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F359E

10.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F359E	#FFFFFF	#000000	##FFFFFF
##1F359E	1.00	10.19	2.06	10.19
#FFFFFF	10.19	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A1

Deuteranopia (green-blind)

#003B9C

Tritanopia (blue-blind)

#005164

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #1f359e;
/* rgb */ color: rgb(31, 53, 158);
/* oklch */ color: oklch(38.8% 0.171 267.8);

Tailwind

colors: {
  custom: {
    50: '#716cbc',
    500: '#1f359e',
    950: '#000000',
  },
}

SCSS

$custom: #1f359e;
$custom-light: #716cbc;
$custom-dark: #000000;

JSON

{
  "hex": "#1f359e",
  "rgb": {
    "r": 31,
    "g": 53,
    "b": 158
  },
  "hsl": {
    "h": 229.606,
    "s": 67.196,
    "l": 37.059
  },
  "oklch": {
    "l": 0.38808,
    "c": 0.17127,
    "h": 267.8
  },
  "luminance": 0.05306
}

Semantic roles & 50–950 ramp

primary

#1F359E

secondary

#C2B056

accent

#CC3EEA

background

#F7F6FB

surface

#EDEBF6

border

#C8C6D0

text

#090712

muted

#7B7A81

Preview Lab

Preview with #1F359E

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

Preview Lab → · Contrast checker → · Palette generator →