#819CB3
Closest named color: Cool Gray (#8D99AE). oklch(68% 0.046 244.2), rgb(129, 156, 179).
Aa
Black text reads best on this color (7.33:1).
About this color
#819CB3 is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.046 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.017 away. Black text reads best on it, at 7.33:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.33:1 |
| White text | 2.86:1 |
Values
| HEX | #819CB3 |
| RGB | rgb(129, 156, 179) |
| HSL | hsl(208, 25%, 60%) |
| OKLCH | oklch(68% 0.046 244.2) |
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 #819CB3 | 2.86:1 | Fails | Lc -60.1 | Content text, not long reading |
| Black text on #819CB3 | 7.33:1 | AAA | Lc 49.3 | Large or bold text, headings |
| #819CB3 text on white | 2.86:1 | Fails | Lc 54.8 | Large or bold text, headings |
| #819CB3 text on black | 7.33:1 | AAA | Lc -47.0 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D1DBE3
oklch(88.6% 0.015 241.8)
-
Step 300
300
#B2C3D2
oklch(80.9% 0.028 244.8)
-
Step 400
400 (this color)
#819CB3
oklch(68% 0.046 244.2)
-
Step 500
500
#6B8EAB
oklch(63.1% 0.059 243.9)
-
Step 600
600
#537896
oklch(55.7% 0.063 243.7)
-
Step 700
700
#436580
oklch(49.2% 0.059 243.3)
-
Step 800
800
#375268
oklch(42.7% 0.049 243.9)
-
Step 900
900
#304455
oklch(37.7% 0.039 244.7)
-
Step 950
950
#1C2832
oklch(27% 0.025 244)
#819CB3 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) | #939CB4 | 0.024 |
| Deuteranopia (no green cones) | #8C96B3 | 0.021 |
| Tritanopia (no blue cones) | #72A1A3 | 0.037 |
| Achromatopsia (no color) | #999999 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819CB3
#819CB3
oklch(68% 0.046 244.2)
- #AD937B
#AD937B
oklch(68% 0.046 64.6)
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 #819CB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.017
- Greyblue #77A1B5 ΔE 0.017
- Bluey Grey #89A0B0 ΔE 0.017
- Bluegrey #85A3B2 ΔE 0.022
- Cool Grey #95A3A6 ΔE 0.041
- Cool Steel #97A7B3 ΔE 0.045
- Silver Lake Blue #778DA9 ΔE 0.045
- Blue Grey #758DA3 ΔE 0.048
Use #819CB3 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.