#818A98
Closest named color: Light Slate Gray (#778899). oklch(63.1% 0.024 259.2), rgb(129, 138, 152).
Aa
Black text reads best on this color (6.02:1).
About this color
#818A98 is a medium-light close to neutral grey. In OKLCH its lightness is 63%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Light Slate Gray (#778899), ΔE 0.016 away. Black text reads best on it, at 6.02:1.
| Hue family | Neutrals |
| Lightness | medium-light (63%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 6.02:1 |
| White text | 3.48:1 |
Values
| HEX | #818A98 |
| RGB | rgb(129, 138, 152) |
| HSL | hsl(217, 10%, 55%) |
| OKLCH | oklch(63.1% 0.024 259.2) |
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 #818A98 | 3.48:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #818A98 | 6.02:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #818A98 text on white | 3.48:1 | AA large text | Lc 62.4 | Content text, not long reading |
| #818A98 text on black | 6.02:1 | AA | Lc -39.2 | 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
#D7D9DD
oklch(88.5% 0.006 264.5)
-
Step 300
300
#BCC1C8
oklch(80.9% 0.011 256.7)
-
Step 400
400
#9AA1AC
oklch(70.7% 0.018 259.4)
-
Step 500
500 (this color)
#818A98
oklch(63.1% 0.024 259.2)
-
Step 600
600
#6A7483
oklch(55.6% 0.026 258.4)
-
Step 700
700
#59616F
oklch(49.1% 0.025 261.7)
-
Step 800
800
#494F5A
oklch(42.6% 0.02 262.6)
-
Step 900
900
#3D424A
oklch(37.7% 0.015 259.8)
-
Step 950
950
#24272B
oklch(27.1% 0.009 255.6)
#818A98 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) | #868A99 | 0.007 |
| Deuteranopia (no green cones) | #838898 | 0.006 |
| Tritanopia (no blue cones) | #7C8D8E | 0.021 |
| Achromatopsia (no color) | #898989 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818A98
#818A98
oklch(63.1% 0.024 259.2)
- #91887A
#91887A
oklch(63.1% 0.023 79)
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 #818A98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.016
- Blue Grey #758DA3 ΔE 0.021
- Steel #738595 ΔE 0.025
- Silver Lake Blue #778DA9 ΔE 0.026
- Lavender Gray #7E7F9A ΔE 0.033
- Gray #808080 ΔE 0.039
- Slate Gray #708090 ΔE 0.039
- Steel Grey #6F828A ΔE 0.039
Use #818A98 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.