#1F136A#1F136A

#1F136A is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.7% C 0.140 H 278.2°. Best body text is #FFFFFF at 15.45:1 contrast (WCAG AA passes).

Color values

HEX	#1F136A
RGB	rgb(31, 19, 106)
HSL	hsl(248, 70%, 25%)
HSV	hsv(248, 82%, 42%)
CMYK	cmyk(70.8%, 82.1%, 0%, 58.4%)
CIE-LAB	lab(14.39, 33.75, -48.07)
CIE-LCH	lch(14.39, 58.74, 305.07°)
OKLab	oklab(27.69% 0.0201 -0.1389)
OKLCH	oklch(27.69% 0.14 278.2)
XYZ	xyz(3.3986, 1.7974, 13.8007)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F136A #5E6A13

analogous

#13336A #1F136A #4B136A

triadic

#1F136A #6A1F13 #136A1F

tetradic

#1F136A #6A1333 #5E6A13 #136A4B

square

#1F136A #6A1333 #5E6A13 #136A4B

split-complementary

#1F136A #6A4B13 #336A13

monochromatic

#08051A #100A36 #1F136A #2E1C9E #3D26D2

Accessibility & contrast

On white

15.45

#1F136A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#1F136A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F136A

15.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F136A	#FFFFFF	#000000	##FFFFFF
##1F136A	1.00	15.45	1.36	15.45
#FFFFFF	15.45	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00286C

Deuteranopia (green-blind)

#002168

Tritanopia (blue-blind)

#002D3E

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #1f136a;
/* rgb */ color: rgb(31, 19, 106);
/* oklch */ color: oklch(27.7% 0.140 278.2);

Tailwind

colors: {
  custom: {
    50: '#675396',
    500: '#1f136a',
    950: '#000000',
  },
}

SCSS

$custom: #1f136a;
$custom-light: #675396;
$custom-dark: #000000;

JSON

{
  "hex": "#1f136a",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 106
  },
  "hsl": {
    "h": 248.276,
    "s": 69.6,
    "l": 24.51
  },
  "oklch": {
    "l": 0.27688,
    "c": 0.14032,
    "h": 278.2
  },
  "luminance": 0.01798
}

Semantic roles & 50–950 ramp

primary

#1F136A

secondary

#93A138

accent

#EC3BD4

background

#F6F4F9

surface

#EBE7F2

border

#C6C3CC

text

#07020D

muted

#7A787E

Preview Lab

Preview with #1F136A

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

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