#1B155E#1B155E

#1B155E is a dark, vivid blue. Relative luminance 0.016; OKLCH L 26.3% C 0.123 H 277.4°. Best body text is #FFFFFF at 15.96:1 contrast (WCAG AA passes).

Color values

HEX	#1B155E
RGB	rgb(27, 21, 94)
HSL	hsl(245, 63%, 23%)
HSV	hsv(245, 78%, 37%)
CMYK	cmyk(71.3%, 77.7%, 0%, 63.1%)
CIE-LAB	lab(13.09, 27.92, -42.27)
CIE-LCH	lch(13.09, 50.66, 303.44°)
OKLab	oklab(26.28% 0.0158 -0.1221)
OKLCH	oklch(26.28% 0.123 277.4)
XYZ	xyz(2.7399, 1.5773, 10.7476)
Luminance	0.0158 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1B155E #585E15

analogous

#15335E #1B155E #40155E

triadic

#1B155E #5E1B15 #155E1B

tetradic

#1B155E #5E1533 #585E15 #155E40

square

#1B155E #5E1533 #585E15 #155E40

split-complementary

#1B155E #5E4015 #335E15

monochromatic

#070619 #0D0A2C #1B155E #292090 #382BC2

Accessibility & contrast

On white

15.96

#1B155E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#1B155E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1B155E

15.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1B155E	#FFFFFF	#000000	##FFFFFF
##1B155E	1.00	15.96	1.32	15.96
#FFFFFF	15.96	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002560

Deuteranopia (green-blind)

#001F5D

Tritanopia (blue-blind)

#002938

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #1b155e;
/* rgb */ color: rgb(27, 21, 94);
/* oklch */ color: oklch(26.3% 0.123 277.4);

Tailwind

colors: {
  custom: {
    50: '#62538c',
    500: '#1b155e',
    950: '#000000',
  },
}

SCSS

$custom: #1b155e;
$custom-light: #62538c;
$custom-dark: #000000;

JSON

{
  "hex": "#1b155e",
  "rgb": {
    "r": 27,
    "g": 21,
    "b": 94
  },
  "hsl": {
    "h": 244.932,
    "s": 63.478,
    "l": 22.549
  },
  "oklch": {
    "l": 0.2628,
    "c": 0.12312,
    "h": 277.4
  },
  "luminance": 0.01577
}

Semantic roles & 50–950 ramp

primary

#1B155E

secondary

#8E9539

accent

#E741D9

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #1B155E

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

Preview Lab → · Contrast checker → · Palette generator →