#819CD1
Closest named color: Greyblue (#77A1B5). oklch(69.2% 0.084 263.5), rgb(129, 156, 209).
Aa
Black text reads best on this color (7.60:1).
About this color
#819CD1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 69%, its chroma 0.084 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.051 away. Black text reads best on it, at 7.60:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.60:1 |
| White text | 2.75:1 |
Values
| HEX | #819CD1 |
| RGB | rgb(129, 156, 209) |
| HSL | hsl(220, 47%, 66%) |
| OKLCH | oklch(69.2% 0.084 263.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #819CD1 | 2.75:1 | Fails | Lc -58.5 | Large or bold text, headings |
| Black text on #819CD1 | 7.60:1 | AAA | Lc 50.8 | Large or bold text, headings |
| #819CD1 text on white | 2.75:1 | Fails | Lc 53.2 | Large or bold text, headings |
| #819CD1 text on black | 7.60:1 | AAA | Lc -48.6 | Large or bold text, headings |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 400.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#CFDAED
oklch(88.6% 0.029 261.5)
-
Step 300
300
#AFC1E4
oklch(80.9% 0.053 263.7)
-
Step 400
400 (this color)
#819CD1
oklch(69.2% 0.084 263.5)
-
Step 500
500
#6788CB
oklch(63% 0.108 263.6)
-
Step 600
600
#4F71B8
oklch(55.6% 0.118 263.7)
-
Step 700
700
#405E9E
oklch(49% 0.109 263.9)
-
Step 800
800
#354D80
oklch(42.6% 0.09 263.9)
-
Step 900
900
#2E4167
oklch(37.8% 0.07 263.2)
-
Step 950
950
#1B263C
oklch(27% 0.044 263.4)
#819CD1 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #8AA0D3 | 0.017 |
| Deuteranopia (no green cones) | #8298D0 | 0.011 |
| Tritanopia (no blue cones) | #67A7AE | 0.076 |
| Achromatopsia (no color) | #9C9C9C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CD1
#819CD1
oklch(69.2% 0.084 263.5)
- #B5985D
#B5985D
oklch(69.3% 0.085 84.1)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #819CD1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.051
- Cool Gray #8D99AE ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.055
- Bluegrey #85A3B2 ΔE 0.056
- Cornflower Blue #6495ED ΔE 0.060
- Perrywinkle #8F8CE7 ΔE 0.062
- Faded Blue #658CBB ΔE 0.064
- Silver Lake Blue #778DA9 ΔE 0.067
Use #819CD1 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.