#2599B1#2599B1

#2599B1 is a light, moderate cyan. Relative luminance 0.264; OKLCH L 63.2% C 0.103 H 215.5°. Best body text is #000000 at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#2599B1
RGB	rgb(37, 153, 177)
HSL	hsl(190, 65%, 42%)
HSV	hsv(190, 79%, 69%)
CMYK	cmyk(79.1%, 13.6%, 0%, 30.6%)
CIE-LAB	lab(58.37, -22.72, -21.43)
CIE-LCH	lch(58.37, 31.23, 223.33°)
OKLab	oklab(63.2% -0.0839 -0.0598)
OKLCH	oklch(63.2% 0.103 215.5)
XYZ	xyz(20.0866, 26.3476, 45.6134)
Luminance	0.2635 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2599B1 #B13D25

analogous

#25B183 #2599B1 #2553B1

triadic

#2599B1 #B12599 #99B125

tetradic

#2599B1 #8325B1 #B13D25 #53B125

square

#2599B1 #8325B1 #B13D25 #53B125

split-complementary

#2599B1 #B12553 #B18325

monochromatic

#10414C #1A6D7E #2599B1 #3DBCD6 #6FCEE1

Accessibility & contrast

On white

3.35

#2599B1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.27

#2599B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #2599B1

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2599B1	#FFFFFF	#000000	##000000
##2599B1	1.00	3.35	6.27	6.27
#FFFFFF	3.35	1.00	21.00	21.00
#000000	6.27	21.00	1.00	1.00
##000000	6.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#8894B2

Deuteranopia (green-blind)

#7686B1

Tritanopia (blue-blind)

#00A2A0

Achromatopsia (no color)

#8C8C8C

Design tokens & code

CSS

--color: #2599b1;
/* rgb */ color: rgb(37, 153, 177);
/* oklch */ color: oklch(63.2% 0.103 215.5);

Tailwind

colors: {
  custom: {
    50: '#78b7c8',
    500: '#2599b1',
    950: '#000000',
  },
}

SCSS

$custom: #2599b1;
$custom-light: #78b7c8;
$custom-dark: #000000;

JSON

{
  "hex": "#2599b1",
  "rgb": {
    "r": 37,
    "g": 153,
    "b": 177
  },
  "hsl": {
    "h": 190.286,
    "s": 65.421,
    "l": 41.961
  },
  "oklch": {
    "l": 0.63203,
    "c": 0.10305,
    "h": 215.5
  },
  "luminance": 0.2635
}

Semantic roles & 50–950 ramp

primary

#2599B1

secondary

#C87A6A

accent

#5C3FE8

background

#F8FBFC

surface

#EFF6F8

border

#CAD0D1

text

#0A1113

muted

#7C8082

Preview Lab

Preview with #2599B1

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

Preview Lab → · Contrast checker → · Palette generator →