#819399
Closest named color: Blue Grey (#758DA3). oklch(65.1% 0.023 219.8), rgb(129, 147, 153).
Aa
Black text reads best on this color (6.56:1).
About this color
#819399 is a medium-light close to neutral grey. In OKLCH its lightness is 65%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Blue Grey (#758DA3), ΔE 0.031 away. Black text reads best on it, at 6.56:1.
| Hue family | Neutrals |
| Lightness | medium-light (65%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #819399 |
| RGB | rgb(129, 147, 153) |
| HSL | hsl(195, 11%, 55%) |
| OKLCH | oklch(65.1% 0.023 219.8) |
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 #819399 | 3.19:1 | AA large text | Lc -64.6 | Content text, not long reading |
| Black text on #819399 | 6.56:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #819399 text on white | 3.19:1 | AA large text | Lc 59.2 | Large or bold text, headings |
| #819399 text on black | 6.56:1 | AA | Lc -42.5 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E8EAEB
oklch(93.6% 0.003 228.8)
-
Step 200
200
#D5DADC
oklch(88.5% 0.006 223.5)
-
Step 300
300
#B9C2C5
oklch(80.8% 0.011 219.6)
-
Step 400
400
#95A3A8
oklch(70.6% 0.017 221.2)
-
Step 500
500 (this color)
#819399
oklch(65.1% 0.023 219.8)
-
Step 600
600
#64777D
oklch(55.6% 0.024 218.8)
-
Step 700
700
#53646A
oklch(49.1% 0.023 221.2)
-
Step 800
800
#445256
oklch(42.8% 0.019 216.9)
-
Step 900
900
#394447
oklch(37.8% 0.015 216)
-
Step 950
950
#22282A
oklch(27.2% 0.009 219.8)
#819399 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) | #8F9299 | 0.019 |
| Deuteranopia (no green cones) | #8B8F99 | 0.017 |
| Tritanopia (no blue cones) | #7A9595 | 0.013 |
| Achromatopsia (no color) | #909090 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #819399
#819399
oklch(65.1% 0.023 219.8)
- #9C8B85
#9C8B85
oklch(65% 0.022 40.5)
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 #819399, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.031
- Light Slate Gray #778899 ΔE 0.036
- Silver Lake Blue #778DA9 ΔE 0.036
- Cool Gray #8D99AE ΔE 0.037
- Warm Grey #978A84 ΔE 0.041
- Bluey Grey #89A0B0 ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.045
- Steel #738595 ΔE 0.046
Use #819399 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.