#151A40#151A40

#151A40 is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.8% C 0.072 H 274.0°. Best body text is #FFFFFF at 16.75:1 contrast (WCAG AA passes).

Color values

HEX	#151A40
RGB	rgb(21, 26, 64)
HSL	hsl(233, 51%, 17%)
HSV	hsv(233, 67%, 25%)
CMYK	cmyk(67.2%, 59.4%, 0%, 74.9%)
CIE-LAB	lab(11.05, 11.64, -25.03)
CIE-LCH	lch(11.05, 27.60, 294.95°)
OKLab	oklab(23.77% 0.005 -0.0717)
OKLCH	oklch(23.77% 0.072 274)
XYZ	xyz(1.6038, 1.2683, 5.0098)
Luminance	0.0127 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151A40 #403B15

analogous

#153040 #151A40 #261540

triadic

#151A40 #40151A #1A4015

tetradic

#151A40 #401530 #403B15 #154026

square

#151A40 #401530 #403B15 #154026

split-complementary

#151A40 #402615 #304015

monochromatic

#080917 #080917 #151A40 #242D6E #333F9C

Accessibility & contrast

On white

16.75

#151A40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#151A40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151A40

16.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151A40	#FFFFFF	#000000	##FFFFFF
##151A40	1.00	16.75	1.25	16.75
#FFFFFF	16.75	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#051F41

Deuteranopia (green-blind)

#001C3F

Tritanopia (blue-blind)

#00232A

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #151a40;
/* rgb */ color: rgb(21, 26, 64);
/* oklch */ color: oklch(23.8% 0.072 274.0);

Tailwind

colors: {
  custom: {
    50: '#575675',
    500: '#151a40',
    950: '#000000',
  },
}

SCSS

$custom: #151a40;
$custom-light: #575675;
$custom-dark: #000000;

JSON

{
  "hex": "#151a40",
  "rgb": {
    "r": 21,
    "g": 26,
    "b": 64
  },
  "hsl": {
    "h": 233.023,
    "s": 50.588,
    "l": 16.667
  },
  "oklch": {
    "l": 0.23769,
    "c": 0.07184,
    "h": 274
  },
  "luminance": 0.01268
}

Semantic roles & 50–950 ramp

primary

#151A40

secondary

#787039

accent

#CA4EDA

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #151A40

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

Preview Lab → · Contrast checker → · Palette generator →