#1F87B4#1F87B4

#1F87B4 is a mid, moderate cyan. Relative luminance 0.209; OKLCH L 58.8% C 0.112 H 232.9°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#1F87B4
RGB	rgb(31, 135, 180)
HSL	hsl(198, 71%, 41%)
HSV	hsv(198, 83%, 71%)
CMYK	cmyk(82.8%, 25%, 0%, 29.4%)
CIE-LAB	lab(52.85, -12.53, -31.67)
CIE-LCH	lch(52.85, 34.06, 248.41°)
OKLab	oklab(58.79% -0.0676 -0.0894)
OKLCH	oklch(58.79% 0.112 232.9)
XYZ	xyz(17.4639, 20.9123, 46.2872)
Luminance	0.2092 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1F87B4 #B44C1F

analogous

#1FB497 #1F87B4 #1F3DB4

triadic

#1F87B4 #B41F87 #87B41F

tetradic

#1F87B4 #971FB4 #B44C1F #3DB41F

square

#1F87B4 #971FB4 #B44C1F #3DB41F

split-complementary

#1F87B4 #B41F3D #B4971F

monochromatic

#0D394C #166080 #1F87B4 #34A9DC #68BFE5

Accessibility & contrast

On white

4.05

#1F87B4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#1F87B4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #1F87B4

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1F87B4	#FFFFFF	#000000	##000000
##1F87B4	1.00	4.05	5.18	5.18
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7186B6

Deuteranopia (green-blind)

#5D78B3

Tritanopia (blue-blind)

#009396

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #1f87b4;
/* rgb */ color: rgb(31, 135, 180);
/* oklch */ color: oklch(58.8% 0.112 232.9);

Tailwind

colors: {
  custom: {
    50: '#75aaca',
    500: '#1f87b4',
    950: '#000000',
  },
}

SCSS

$custom: #1f87b4;
$custom-light: #75aaca;
$custom-dark: #000000;

JSON

{
  "hex": "#1f87b4",
  "rgb": {
    "r": 31,
    "g": 135,
    "b": 180
  },
  "hsl": {
    "h": 198.121,
    "s": 70.616,
    "l": 41.373
  },
  "oklch": {
    "l": 0.58793,
    "c": 0.11208,
    "h": 232.9
  },
  "luminance": 0.20915
}

Semantic roles & 50–950 ramp

primary

#1F87B4

secondary

#CB8364

accent

#703AED

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #1F87B4

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

Preview Lab → · Contrast checker → · Palette generator →