#151D58#151D58

#151D58 is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.106 H 271.3°. Best body text is #FFFFFF at 15.57:1 contrast (WCAG AA passes).

Color values

HEX	#151D58
RGB	rgb(21, 29, 88)
HSL	hsl(233, 61%, 21%)
HSV	hsv(233, 76%, 35%)
CMYK	cmyk(76.1%, 67%, 0%, 65.5%)
CIE-LAB	lab(14.07, 19.26, -36.65)
CIE-LCH	lch(14.07, 41.40, 297.72°)
OKLab	oklab(26.69% 0.0023 -0.1058)
OKLCH	oklch(26.69% 0.106 271.3)
XYZ	xyz(2.5095, 1.7425, 9.4347)
Luminance	0.0174 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#151D58 #585015

analogous

#153F58 #151D58 #2F1558

triadic

#151D58 #58151D #1D5815

tetradic

#151D58 #58153F #585015 #15582F

square

#151D58 #58153F #585015 #15582F

split-complementary

#151D58 #582F15 #3F5815

monochromatic

#060819 #090D27 #151D58 #212D89 #2D3EBB

Accessibility & contrast

On white

15.57

#151D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.35

#151D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #151D58

15.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##151D58	#FFFFFF	#000000	##FFFFFF
##151D58	1.00	15.57	1.35	15.57
#FFFFFF	15.57	1.00	21.00	1.00
#000000	1.35	21.00	1.00	21.00
##FFFFFF	15.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275A

Deuteranopia (green-blind)

#002157

Tritanopia (blue-blind)

#002C37

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #151d58;
/* rgb */ color: rgb(21, 29, 88);
/* oklch */ color: oklch(26.7% 0.106 271.3);

Tailwind

colors: {
  custom: {
    50: '#5d5888',
    500: '#151d58',
    950: '#000000',
  },
}

SCSS

$custom: #151d58;
$custom-light: #5d5888;
$custom-dark: #000000;

JSON

{
  "hex": "#151d58",
  "rgb": {
    "r": 21,
    "g": 29,
    "b": 88
  },
  "hsl": {
    "h": 232.836,
    "s": 61.468,
    "l": 21.373
  },
  "oklch": {
    "l": 0.26688,
    "c": 0.10583,
    "h": 271.3
  },
  "luminance": 0.01743
}

Semantic roles & 50–950 ramp

primary

#151D58

secondary

#908539

accent

#D143E5

background

#F5F5F8

surface

#E9E9F0

border

#C5C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #151D58

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

Preview Lab → · Contrast checker → · Palette generator →