#1F156E#1F156E

#1F156E is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.4% C 0.144 H 277.1°. Best body text is #FFFFFF at 15.10:1 contrast (WCAG AA passes).

Color values

HEX	#1F156E
RGB	rgb(31, 21, 110)
HSL	hsl(247, 68%, 26%)
HSV	hsv(247, 81%, 43%)
CMYK	cmyk(71.8%, 80.9%, 0%, 56.9%)
CIE-LAB	lab(15.24, 33.99, -49.28)
CIE-LCH	lch(15.24, 59.86, 304.59°)
OKLab	oklab(28.42% 0.0178 -0.1424)
OKLCH	oklch(28.42% 0.144 277.1)
XYZ	xyz(3.6468, 1.9531, 14.9336)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F156E #646E15

analogous

#15376E #1F156E #4B156E

triadic

#1F156E #6E1F15 #156E1F

tetradic

#1F156E #6E1537 #646E15 #156E4B

square

#1F156E #6E1537 #646E15 #156E4B

split-complementary

#1F156E #6E4B15 #376E15

monochromatic

#07051A #110B3B #1F156E #2D1FA1 #3C29D5

Accessibility & contrast

On white

15.10

#1F156E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#1F156E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1F156E

15.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F156E	#FFFFFF	#000000	##FFFFFF
##1F156E	1.00	15.10	1.39	15.10
#FFFFFF	15.10	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A71

Deuteranopia (green-blind)

#00226C

Tritanopia (blue-blind)

#002F41

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #1f156e;
/* rgb */ color: rgb(31, 21, 110);
/* oklch */ color: oklch(28.4% 0.144 277.1);

Tailwind

colors: {
  custom: {
    50: '#685599',
    500: '#1f156e',
    950: '#000000',
  },
}

SCSS

$custom: #1f156e;
$custom-light: #685599;
$custom-dark: #000000;

JSON

{
  "hex": "#1f156e",
  "rgb": {
    "r": 31,
    "g": 21,
    "b": 110
  },
  "hsl": {
    "h": 246.742,
    "s": 67.939,
    "l": 25.686
  },
  "oklch": {
    "l": 0.28423,
    "c": 0.14352,
    "h": 277.1
  },
  "luminance": 0.01953
}

Semantic roles & 50–950 ramp

primary

#1F156E

secondary

#98A43A

accent

#EB3DD7

background

#F6F5F9

surface

#ECE9F2

border

#C7C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #1F156E

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

Preview Lab → · Contrast checker → · Palette generator →