#1F157E#1F157E

#1F157E is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.3% C 0.164 H 274.7°. Best body text is #FFFFFF at 14.32:1 contrast (WCAG AA passes).

Color values

HEX	#1F157E
RGB	rgb(31, 21, 126)
HSL	hsl(246, 71%, 29%)
HSV	hsv(246, 83%, 49%)
CMYK	cmyk(75.4%, 83.3%, 0%, 50.6%)
CIE-LAB	lab(17.15, 39.30, -56.43)
CIE-LCH	lch(17.15, 68.77, 304.86°)
OKLab	oklab(30.32% 0.0134 -0.1632)
OKLCH	oklch(30.32% 0.164 274.7)
XYZ	xyz(4.5979, 2.3335, 19.9427)
Luminance	0.0233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F157E #747E15

analogous

#15407E #1F157E #54157E

triadic

#1F157E #7E1F15 #157E1F

tetradic

#1F157E #7E1540 #747E15 #157E54

square

#1F157E #7E1540 #747E15 #157E54

split-complementary

#1F157E #7E5415 #407E15

monochromatic

#06041A #120C4A #1F157E #2C1EB2 #4131DD

Accessibility & contrast

On white

14.32

#1F157E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#1F157E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F157E

14.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F157E	#FFFFFF	#000000	##FFFFFF
##1F157E	1.00	14.32	1.47	14.32
#FFFFFF	14.32	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F81

Deuteranopia (green-blind)

#00257C

Tritanopia (blue-blind)

#00364A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #1f157e;
/* rgb */ color: rgb(31, 21, 126);
/* oklch */ color: oklch(30.3% 0.164 274.7);

Tailwind

colors: {
  custom: {
    50: '#6c56a5',
    500: '#1f157e',
    950: '#000000',
  },
}

SCSS

$custom: #1f157e;
$custom-light: #6c56a5;
$custom-dark: #000000;

JSON

{
  "hex": "#1f157e",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 126
  },
  "hsl": {
    "h": 245.714,
    "s": 71.429,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30315,
    "c": 0.16373,
    "h": 274.7
  },
  "luminance": 0.02334
}

Semantic roles & 50–950 ramp

primary

#1F157E

secondary

#A8B33C

accent

#EE3ADD

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#08030F

muted

#7B787F

Preview Lab

Preview with #1F157E

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

Preview Lab → · Contrast checker → · Palette generator →