#237BA5#237BA5

#237BA5 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.2% C 0.103 H 234.4°. Best body text is #FFFFFF at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#237BA5
RGB	rgb(35, 123, 165)
HSL	hsl(199, 65%, 39%)
HSV	hsv(199, 79%, 65%)
CMYK	cmyk(78.8%, 25.5%, 0%, 35.3%)
CIE-LAB	lab(48.56, -10.71, -29.69)
CIE-LCH	lch(48.56, 31.56, 250.17°)
OKLab	oklab(55.17% -0.06 -0.0837)
OKLCH	oklch(55.17% 0.103 234.4)
XYZ	xyz(14.5649, 17.2381, 38.1497)
Luminance	0.1724 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#237BA5 #A54D23

analogous

#23A58E #237BA5 #233AA5

triadic

#237BA5 #A5237B #7BA523

tetradic

#237BA5 #8E23A5 #A54D23 #3AA523

square

#237BA5 #8E23A5 #A54D23 #3AA523

split-complementary

#237BA5 #A5233A #A58E23

monochromatic

#0E3040 #185573 #237BA5 #329FD3 #64B7DE

Accessibility & contrast

On white

4.72

#237BA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.45

#237BA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #237BA5

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##237BA5	#FFFFFF	#000000	##FFFFFF
##237BA5	1.00	4.72	4.45	4.72
#FFFFFF	4.72	1.00	21.00	1.00
#000000	4.45	21.00	1.00	21.00
##FFFFFF	4.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#667AA7

Deuteranopia (green-blind)

#556EA4

Tritanopia (blue-blind)

#008689

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #237ba5;
/* rgb */ color: rgb(35, 123, 165);
/* oklch */ color: oklch(55.2% 0.103 234.4);

Tailwind

colors: {
  custom: {
    50: '#73a1c0',
    500: '#237ba5',
    950: '#000000',
  },
}

SCSS

$custom: #237ba5;
$custom-light: #73a1c0;
$custom-dark: #000000;

JSON

{
  "hex": "#237ba5",
  "rgb": {
    "r": 35,
    "g": 123,
    "b": 165
  },
  "hsl": {
    "h": 199.385,
    "s": 65,
    "l": 39.216
  },
  "oklch": {
    "l": 0.55168,
    "c": 0.10301,
    "h": 234.4
  },
  "luminance": 0.1724
}

Semantic roles & 50–950 ramp

primary

#237BA5

secondary

#C48060

accent

#7640E8

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#090E12

muted

#7B7E81

Preview Lab

Preview with #237BA5

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

Preview Lab → · Contrast checker → · Palette generator →