#1F39BC#1F39BC

#1F39BC is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.5% C 0.205 H 267.1°. Best body text is #FFFFFF at 8.86:1 contrast (WCAG AA passes).

Color values

HEX	#1F39BC
RGB	rgb(31, 57, 188)
HSL	hsl(230, 72%, 43%)
HSV	hsv(230, 84%, 74%)
CMYK	cmyk(83.5%, 69.7%, 0%, 26.3%)
CIE-LAB	lab(31.46, 39.86, -70.71)
CIE-LCH	lch(31.46, 81.18, 299.41°)
OKLab	oklab(42.51% -0.0104 -0.205)
OKLCH	oklch(42.51% 0.205 267.1)
XYZ	xyz(11.1021, 6.8470, 48.3037)
Luminance	0.0685 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F39BC #BCA21F

analogous

#1F87BC #1F39BC #541FBC

triadic

#1F39BC #BC1F39 #39BC1F

tetradic

#1F39BC #BC1F87 #BCA21F #1FBC54

square

#1F39BC #BC1F87 #BCA21F #1FBC54

split-complementary

#1F39BC #BC541F #87BC1F

monochromatic

#0E1953 #162987 #1F39BC #3A55DE #6E82E7

Accessibility & contrast

On white

8.86

#1F39BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#1F39BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F39BC

8.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F39BC	#FFFFFF	#000000	##FFFFFF
##1F39BC	1.00	8.86	2.37	8.86
#FFFFFF	8.86	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C0

Deuteranopia (green-blind)

#0042BA

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1f39bc;
/* rgb */ color: rgb(31, 57, 188);
/* oklch */ color: oklch(42.5% 0.205 267.1);

Tailwind

colors: {
  custom: {
    50: '#796fd1',
    500: '#1f39bc',
    950: '#000000',
  },
}

SCSS

$custom: #1f39bc;
$custom-light: #796fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#1f39bc",
  "rgb": {
    "r": 31,
    "g": 57,
    "b": 188
  },
  "hsl": {
    "h": 230.064,
    "s": 71.689,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42509,
    "c": 0.20523,
    "h": 267.1
  },
  "luminance": 0.06848
}

Semantic roles & 50–950 ramp

primary

#1F39BC

secondary

#CDBD69

accent

#D039EE

background

#F8F6FD

surface

#EFECFA

border

#CAC7D3

text

#0B0714

muted

#7C7A83

Preview Lab

Preview with #1F39BC

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

Preview Lab → · Contrast checker → · Palette generator →