#153B6B#153B6B

#153B6B is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.3% C 0.094 H 255.9°. Best body text is #FFFFFF at 11.23:1 contrast (WCAG AA passes).

Color values

HEX	#153B6B
RGB	rgb(21, 59, 107)
HSL	hsl(213, 67%, 25%)
HSV	hsv(213, 80%, 42%)
CMYK	cmyk(80.4%, 44.9%, 0%, 58%)
CIE-LAB	lab(24.79, 5.41, -31.82)
CIE-LCH	lch(24.79, 32.28, 279.64°)
OKLab	oklab(35.3% -0.0229 -0.0911)
OKLCH	oklch(35.3% 0.094 255.9)
XYZ	xyz(4.5261, 4.3484, 14.5078)
Luminance	0.0435 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153B6B #6B4515

analogous

#15666B #153B6B #1A156B

triadic

#153B6B #6B153B #3B6B15

tetradic

#153B6B #6B1566 #6B4515 #156B1A

square

#153B6B #6B1566 #6B4515 #156B1A

split-complementary

#153B6B #6B1A15 #666B15

monochromatic

#050E1A #0B1F38 #153B6B #1F579E #2973D1

Accessibility & contrast

On white

11.23

#153B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.87

#153B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153B6B

11.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153B6B	#FFFFFF	#000000	##FFFFFF
##153B6B	1.00	11.23	1.87	11.23
#FFFFFF	11.23	1.00	21.00	1.00
#000000	1.87	21.00	1.00	21.00
##FFFFFF	11.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#233F6D

Deuteranopia (green-blind)

#14376A

Tritanopia (blue-blind)

#00464D

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #153b6b;
/* rgb */ color: rgb(21, 59, 107);
/* oklch */ color: oklch(35.3% 0.094 255.9);

Tailwind

colors: {
  custom: {
    50: '#607096',
    500: '#153b6b',
    950: '#000000',
  },
}

SCSS

$custom: #153b6b;
$custom-light: #607096;
$custom-dark: #000000;

JSON

{
  "hex": "#153b6b",
  "rgb": {
    "r": 21,
    "g": 59,
    "b": 107
  },
  "hsl": {
    "h": 213.488,
    "s": 67.188,
    "l": 25.098
  },
  "oklch": {
    "l": 0.35304,
    "c": 0.09388,
    "h": 255.9
  },
  "luminance": 0.04349
}

Semantic roles & 50–950 ramp

primary

#153B6B

secondary

#A2743A

accent

#9E3EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#05070D

muted

#7A7A7E

Preview Lab

Preview with #153B6B

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

Preview Lab → · Contrast checker → · Palette generator →