#153A5E#153A5E

#153A5E is a dark, moderate cyan. Relative luminance 0.040; OKLCH L 34.1% C 0.076 H 250.5°. Best body text is #FFFFFF at 11.67:1 contrast (WCAG AA passes).

Color values

HEX	#153A5E
RGB	rgb(21, 58, 94)
HSL	hsl(210, 63%, 23%)
HSV	hsv(210, 78%, 37%)
CMYK	cmyk(77.7%, 38.3%, 0%, 63.1%)
CIE-LAB	lab(23.65, 0.69, -25.23)
CIE-LCH	lch(23.65, 25.23, 271.57°)
OKLab	oklab(34.15% -0.0253 -0.0717)
OKLCH	oklch(34.15% 0.076 250.5)
XYZ	xyz(3.8419, 3.9933, 11.1558)
Luminance	0.0399 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#153A5E #5E3915

analogous

#155E5D #153A5E #15165E

triadic

#153A5E #5E153A #3A5E15

tetradic

#153A5E #5D155E #5E3915 #165E15

square

#153A5E #5D155E #5E3915 #165E15

split-complementary

#153A5E #5E1516 #5E5D15

monochromatic

#060F19 #0A1B2C #153A5E #205990 #2B78C2

Accessibility & contrast

On white

11.67

#153A5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.80

#153A5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #153A5E

11.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##153A5E	#FFFFFF	#000000	##FFFFFF
##153A5E	1.00	11.67	1.80	11.67
#FFFFFF	11.67	1.00	21.00	1.00
#000000	1.80	21.00	1.00	21.00
##FFFFFF	11.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3C5F

Deuteranopia (green-blind)

#1F355D

Tritanopia (blue-blind)

#004347

Achromatopsia (no color)

#383838

Design tokens & code

CSS

--color: #153a5e;
/* rgb */ color: rgb(21, 58, 94);
/* oklch */ color: oklch(34.1% 0.076 250.5);

Tailwind

colors: {
  custom: {
    50: '#5d6f8c',
    500: '#153a5e',
    950: '#000000',
  },
}

SCSS

$custom: #153a5e;
$custom-light: #5d6f8c;
$custom-dark: #000000;

JSON

{
  "hex": "#153a5e",
  "rgb": {
    "r": 21,
    "g": 58,
    "b": 94
  },
  "hsl": {
    "h": 209.589,
    "s": 63.478,
    "l": 22.549
  },
  "oklch": {
    "l": 0.34148,
    "c": 0.07606,
    "h": 250.5
  },
  "luminance": 0.03994
}

Semantic roles & 50–950 ramp

primary

#153A5E

secondary

#956739

accent

#9341E7

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #153A5E

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

Preview Lab → · Contrast checker → · Palette generator →