#1F137E#1F137E

#1F137E is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.1% C 0.165 H 274.9°. Best body text is #FFFFFF at 14.46:1 contrast (WCAG AA passes).

Color values

HEX	#1F137E
RGB	rgb(31, 19, 126)
HSL	hsl(247, 74%, 28%)
HSV	hsv(247, 85%, 49%)
CMYK	cmyk(75.4%, 84.9%, 0%, 50.6%)
CIE-LAB	lab(16.81, 40.29, -56.99)
CIE-LCH	lch(16.81, 69.79, 305.26°)
OKLab	oklab(30.08% 0.0142 -0.1648)
OKLCH	oklch(30.08% 0.165 274.9)
XYZ	xyz(4.5626, 2.2630, 19.9310)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F137E #727E13

analogous

#133C7E #1F137E #54137E

triadic

#1F137E #7E1F13 #137E1F

tetradic

#1F137E #7E133C #727E13 #137E54

square

#1F137E #7E133C #727E13 #137E54

split-complementary

#1F137E #7E5413 #3C7E13

monochromatic

#07041B #120B49 #1F137E #2C1BB3 #402CDF

Accessibility & contrast

On white

14.46

#1F137E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#1F137E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F137E

14.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F137E	#FFFFFF	#000000	##FFFFFF
##1F137E	1.00	14.46	1.45	14.46
#FFFFFF	14.46	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E81

Deuteranopia (green-blind)

#00257C

Tritanopia (blue-blind)

#00354A

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #1f137e;
/* rgb */ color: rgb(31, 19, 126);
/* oklch */ color: oklch(30.1% 0.165 274.9);

Tailwind

colors: {
  custom: {
    50: '#6c55a5',
    500: '#1f137e',
    950: '#000000',
  },
}

SCSS

$custom: #1f137e;
$custom-light: #6c55a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f137e",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 126
  },
  "hsl": {
    "h": 246.729,
    "s": 73.793,
    "l": 28.431
  },
  "oklch": {
    "l": 0.30081,
    "c": 0.16538,
    "h": 274.9
  },
  "luminance": 0.02263
}

Semantic roles & 50–950 ramp

primary

#1F137E

secondary

#A6B439

accent

#F037DC

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F137E

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

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