#1F136E#1F136E

#1F136E is a dark, vivid blue. Relative luminance 0.019; OKLCH L 28.2% C 0.145 H 277.5°. Best body text is #FFFFFF at 15.25:1 contrast (WCAG AA passes).

Color values

HEX	#1F136E
RGB	rgb(31, 19, 110)
HSL	hsl(248, 71%, 25%)
HSV	hsv(248, 83%, 43%)
CMYK	cmyk(71.8%, 82.7%, 0%, 56.9%)
CIE-LAB	lab(14.86, 35.09, -49.91)
CIE-LCH	lch(14.86, 61.01, 305.11°)
OKLab	oklab(28.16% 0.0189 -0.1442)
OKLCH	oklch(28.16% 0.145 277.5)
XYZ	xyz(3.6115, 1.8825, 14.9219)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F136E #626E13

analogous

#13346E #1F136E #4C136E

triadic

#1F136E #6E1F13 #136E1F

tetradic

#1F136E #6E1334 #626E13 #136E4C

square

#1F136E #6E1334 #626E13 #136E4C

split-complementary

#1F136E #6E4C13 #346E13

monochromatic

#07051A #100A3A #1F136E #2E1CA2 #3C25D6

Accessibility & contrast

On white

15.25

#1F136E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#1F136E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F136E

15.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F136E	#FFFFFF	#000000	##FFFFFF
##1F136E	1.00	15.25	1.38	15.25
#FFFFFF	15.25	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002971

Deuteranopia (green-blind)

#00226C

Tritanopia (blue-blind)

#002F40

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #1f136e;
/* rgb */ color: rgb(31, 19, 110);
/* oklch */ color: oklch(28.2% 0.145 277.5);

Tailwind

colors: {
  custom: {
    50: '#685399',
    500: '#1f136e',
    950: '#000000',
  },
}

SCSS

$custom: #1f136e;
$custom-light: #685399;
$custom-dark: #000000;

JSON

{
  "hex": "#1f136e",
  "rgb": {
    "r": 31,
    "g": 19,
    "b": 110
  },
  "hsl": {
    "h": 247.912,
    "s": 70.543,
    "l": 25.294
  },
  "oklch": {
    "l": 0.28157,
    "c": 0.14545,
    "h": 277.5
  },
  "luminance": 0.01883
}

Semantic roles & 50–950 ramp

primary

#1F136E

secondary

#97A538

accent

#ED3AD6

background

#F6F4F9

surface

#ECE7F2

border

#C7C3CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F136E

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

Preview Lab → · Contrast checker → · Palette generator →