#153B71#153B71

#153B71 is a dark, moderate blue. Relative luminance 0.045; OKLCH L 35.7% C 0.103 H 257.9°. Best body text is #FFFFFF at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#153B71
RGB	rgb(21, 59, 113)
HSL	hsl(215, 69%, 26%)
HSV	hsv(215, 81%, 44%)
CMYK	cmyk(81.4%, 47.8%, 0%, 55.7%)
CIE-LAB	lab(25.20, 7.92, -35.01)
CIE-LCH	lch(25.20, 35.90, 282.75°)
OKLab	oklab(35.75% -0.0216 -0.1004)
OKLCH	oklch(35.75% 0.103 257.9)
XYZ	xyz(4.8528, 4.4790, 16.2284)
Luminance	0.0448 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B71 #714B15

analogous

#156971 #153B71 #1D1571

triadic

#153B71 #71153B #3B7115

tetradic

#153B71 #711569 #714B15 #15711D

square

#153B71 #711569 #714B15 #15711D

split-complementary

#153B71 #711D15 #697115

monochromatic

#050D1A #0B203D #153B71 #1F56A5 #2971D7

Accessibility & contrast

On white

11.08

#153B71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.90

#153B71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B71

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B71	#FFFFFF	#000000	##FFFFFF
##153B71	1.00	11.08	1.90	11.08
#FFFFFF	11.08	1.00	21.00	1.00
#000000	1.90	21.00	1.00	21.00
##FFFFFF	11.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F4073

Deuteranopia (green-blind)

#093870

Tritanopia (blue-blind)

#004850

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #153b71;
/* rgb */ color: rgb(21, 59, 113);
/* oklch */ color: oklch(35.7% 0.103 257.9);

Tailwind

colors: {
  custom: {
    50: '#62709a',
    500: '#153b71',
    950: '#000000',
  },
}

SCSS

$custom: #153b71;
$custom-light: #62709a;
$custom-dark: #000000;

JSON

{
  "hex": "#153b71",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 113
  },
  "hsl": {
    "h": 215.217,
    "s": 68.657,
    "l": 26.275
  },
  "oklch": {
    "l": 0.35747,
    "c": 0.10273,
    "h": 257.9
  },
  "luminance": 0.0448
}

Semantic roles & 50–950 ramp

primary

#153B71

secondary

#A77A3B

accent

#A33CEB

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #153B71

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

Preview Lab → · Contrast checker → · Palette generator →