#1857B3#1857B3

#1857B3 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.3% C 0.159 H 258.8°. Best body text is #FFFFFF at 6.88:1 contrast (WCAG AA passes).

Color values

HEX	#1857B3
RGB	rgb(24, 87, 179)
HSL	hsl(216, 76%, 40%)
HSV	hsv(216, 87%, 70%)
CMYK	cmyk(86.6%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(38.31, 16.16, -54.21)
CIE-LCH	lch(38.31, 56.57, 286.60°)
OKLab	oklab(47.34% -0.0309 -0.1563)
OKLCH	oklch(47.34% 0.159 258.8)
XYZ	xyz(11.9186, 10.2637, 43.9920)
Luminance	0.1027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1857B3 #B37418

analogous

#18A5B3 #1857B3 #2718B3

triadic

#1857B3 #B31857 #57B318

tetradic

#1857B3 #B318A5 #B37418 #18B327

square

#1857B3 #B318A5 #B37418 #18B327

split-complementary

#1857B3 #B32718 #A5B318

monochromatic

#0A2347 #113D7D #1857B3 #2673E2 #5C96E9

Accessibility & contrast

On white

6.88

#1857B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.05

#1857B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #1857B3

6.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1857B3	#FFFFFF	#000000	##FFFFFF
##1857B3	1.00	6.88	3.05	6.88
#FFFFFF	6.88	1.00	21.00	1.00
#000000	3.05	21.00	1.00	21.00
##FFFFFF	6.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1861B6

Deuteranopia (green-blind)

#0054B1

Tritanopia (blue-blind)

#006E7C

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #1857b3;
/* rgb */ color: rgb(24, 87, 179);
/* oklch */ color: oklch(47.3% 0.159 258.8);

Tailwind

colors: {
  custom: {
    50: '#7385ca',
    500: '#1857b3',
    950: '#000000',
  },
}

SCSS

$custom: #1857b3;
$custom-light: #7385ca;
$custom-dark: #000000;

JSON

{
  "hex": "#1857b3",
  "rgb": {
    "r": 24,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 215.613,
    "s": 76.355,
    "l": 39.804
  },
  "oklch": {
    "l": 0.47337,
    "c": 0.15931,
    "h": 258.8
  },
  "luminance": 0.10265
}

Semantic roles & 50–950 ramp

primary

#1857B3

secondary

#CD9E5A

accent

#A635F3

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #1857B3

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

Preview Lab → · Contrast checker → · Palette generator →