#1F136F#1F136F

#1F136F is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.3% C 0.147 H 277.3°. Best body text is #FFFFFF at 15.21:1 contrast (WCAG AA passes).

Color values

HEX	#1F136F
RGB	rgb(31, 19, 111)
HSL	hsl(248, 71%, 25%)
HSV	hsv(248, 83%, 44%)
CMYK	cmyk(72.1%, 82.9%, 0%, 56.5%)
CIE-LAB	lab(14.98, 35.42, -50.36)
CIE-LCH	lch(14.98, 61.57, 305.12°)
OKLab	oklab(28.28% 0.0186 -0.1455)
OKLCH	oklch(28.28% 0.147 277.3)
XYZ	xyz(3.6663, 1.9044, 15.2102)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F136F #636F13

analogous

#13356F #1F136F #4D136F

triadic

#1F136F #6F1F13 #136F1F

tetradic

#1F136F #6F1335 #636F13 #136F4D

square

#1F136F #6F1335 #636F13 #136F4D

split-complementary

#1F136F #6F4D13 #356F13

monochromatic

#07041A #100A3B #1F136F #2E1CA3 #3C25D8

Accessibility & contrast

On white

15.21

#1F136F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1F136F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F136F

15.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F136F	#FFFFFF	#000000	##FFFFFF
##1F136F	1.00	15.21	1.38	15.21
#FFFFFF	15.21	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002972

Deuteranopia (green-blind)

#00226D

Tritanopia (blue-blind)

#002F41

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f136f;
/* rgb */ color: rgb(31, 19, 111);
/* oklch */ color: oklch(28.3% 0.147 277.3);

Tailwind

colors: {
  custom: {
    50: '#695399',
    500: '#1f136f',
    950: '#000000',
  },
}

SCSS

$custom: #1f136f;
$custom-light: #695399;
$custom-dark: #000000;

JSON

{
  "hex": "#1f136f",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 111
  },
  "hsl": {
    "h": 247.826,
    "s": 70.769,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28275,
    "c": 0.14672,
    "h": 277.3
  },
  "luminance": 0.01905
}

Semantic roles & 50–950 ramp

primary

#1F136F

secondary

#98A638

accent

#EE3AD6

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F136F

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

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