#1F187E#1F187E

#1F187E is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.161 H 274.3°. Best body text is #FFFFFF at 14.09:1 contrast (WCAG AA passes).

Color values

HEX	#1F187E
RGB	rgb(31, 24, 126)
HSL	hsl(244, 68%, 29%)
HSV	hsv(244, 81%, 49%)
CMYK	cmyk(75.4%, 81%, 0%, 50.6%)
CIE-LAB	lab(17.69, 37.72, -55.53)
CIE-LCH	lch(17.69, 67.13, 304.19°)
OKLab	oklab(30.69% 0.0122 -0.1606)
OKLCH	oklch(30.69% 0.161 274.3)
XYZ	xyz(4.6564, 2.4505, 19.9622)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F187E #777E18

analogous

#18447E #1F187E #52187E

triadic

#1F187E #7E1F18 #187E1F

tetradic

#1F187E #7E1844 #777E18 #187E52

square

#1F187E #7E1844 #777E18 #187E52

split-complementary

#1F187E #7E5218 #447E18

monochromatic

#06051A #120E4B #1F187E #2C22B1 #4337D9

Accessibility & contrast

On white

14.09

#1F187E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#1F187E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F187E

14.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F187E	#FFFFFF	#000000	##FFFFFF
##1F187E	1.00	14.09	1.49	14.09
#FFFFFF	14.09	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003081

Deuteranopia (green-blind)

#00277C

Tritanopia (blue-blind)

#00374B

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #1f187e;
/* rgb */ color: rgb(31, 24, 126);
/* oklch */ color: oklch(30.7% 0.161 274.3);

Tailwind

colors: {
  custom: {
    50: '#6c57a5',
    500: '#1f187e',
    950: '#000000',
  },
}

SCSS

$custom: #1f187e;
$custom-light: #6c57a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f187e",
  "rgb": {
    "r": 31,
    "g": 24,
    "b": 126
  },
  "hsl": {
    "h": 244.118,
    "s": 68,
    "l": 29.412
  },
  "oklch": {
    "l": 0.30694,
    "c": 0.16106,
    "h": 274.3
  },
  "luminance": 0.02451
}

Semantic roles & 50–950 ramp

primary

#1F187E

secondary

#ABB23F

accent

#EB3DDF

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F187E

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

Preview Lab → · Contrast checker → · Palette generator →