#818E9A
Closest named color: Blue Grey (#758DA3). oklch(64% 0.024 246), rgb(129, 142, 154).
Aa
Black text reads best on this color (6.26:1).
About this color
#818E9A is a medium-light close to neutral grey. In OKLCH its lightness is 64%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Blue Grey (#758DA3), ΔE 0.021 away. Black text reads best on it, at 6.26:1.
| Hue family | Neutrals |
| Lightness | medium-light (64%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.26:1 |
| White text | 3.34:1 |
Values
| HEX | #818E9A |
| RGB | rgb(129, 142, 154) |
| HSL | hsl(209, 11%, 55%) |
| OKLCH | oklch(64% 0.024 246) |
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 #818E9A | 3.34:1 | AA large text | Lc -66.4 | Content text, not long reading |
| Black text on #818E9A | 6.26:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #818E9A text on white | 3.34:1 | AA large text | Lc 61.0 | Content text, not long reading |
| #818E9A text on black | 6.26:1 | AA | Lc -40.8 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6DADD
oklch(88.6% 0.006 239.8)
-
Step 300
300
#BBC1C8
oklch(80.8% 0.012 252.1)
-
Step 400
400
#98A2AC
oklch(70.7% 0.019 248.1)
-
Step 500
500 (this color)
#818E9A
oklch(64% 0.024 246)
-
Step 600
600
#677582
oklch(55.5% 0.026 246.3)
-
Step 700
700
#56626E
oklch(49% 0.024 248.3)
-
Step 800
800
#465059
oklch(42.6% 0.02 245.4)
-
Step 900
900
#3B4349
oklch(37.8% 0.015 240.3)
-
Step 950
950
#23272B
oklch(27% 0.009 248.2)
#818E9A 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) | #898E9B | 0.011 |
| Deuteranopia (no green cones) | #868B9A | 0.010 |
| Tritanopia (no blue cones) | #7B9192 | 0.019 |
| Achromatopsia (no color) | #8C8C8C | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818E9A
#818E9A
oklch(64% 0.024 246)
- #968A7E
#968A7E
oklch(64.1% 0.023 67.4)
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 #818E9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.021
- Light Slate Gray #778899 ΔE 0.023
- Silver Lake Blue #778DA9 ΔE 0.027
- Steel #738595 ΔE 0.034
- Warm Grey #978A84 ΔE 0.041
- Cool Gray #8D99AE ΔE 0.042
- Lavender Gray #7E7F9A ΔE 0.044
- Gray #808080 ΔE 0.047
Use #818E9A 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.