#818EAC
Closest named color: Silver Lake Blue (#778DA9). oklch(64.7% 0.047 266.7), rgb(129, 142, 172).
Aa
Black text reads best on this color (6.39:1).
About this color
#818EAC is a medium-light, muted blue. In OKLCH its lightness is 65%, its chroma 0.047 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.015 away. Black text reads best on it, at 6.39:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.39:1 |
| White text | 3.28:1 |
Values
| HEX | #818EAC |
| RGB | rgb(129, 142, 172) |
| HSL | hsl(222, 21%, 59%) |
| OKLCH | oklch(64.7% 0.047 266.7) |
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 #818EAC | 3.28:1 | AA large text | Lc -65.6 | Content text, not long reading |
| Black text on #818EAC | 6.39:1 | AA | Lc 43.9 | Non-text elements, placeholder text |
| #818EAC text on white | 3.28:1 | AA large text | Lc 60.2 | Content text, not long reading |
| #818EAC text on black | 6.39:1 | AA | Lc -41.5 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D5D9E2
oklch(88.5% 0.013 266.7)
-
Step 300
300
#BAC1D0
oklch(81% 0.022 265.7)
-
Step 400
400
#96A0B9
oklch(70.6% 0.038 268.1)
-
Step 500
500 (this color)
#818EAC
oklch(64.7% 0.047 266.7)
-
Step 600
600
#657392
oklch(55.6% 0.051 265.8)
-
Step 700
700
#54607D
oklch(49% 0.049 267.1)
-
Step 800
800
#454F65
oklch(42.8% 0.039 265.7)
-
Step 900
900
#3A4152
oklch(37.6% 0.031 267.4)
-
Step 950
950
#222630
oklch(26.9% 0.02 267.9)
#818EAC 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) | #8590AD | 0.008 |
| Deuteranopia (no green cones) | #818CAB | 0.005 |
| Tritanopia (no blue cones) | #769498 | 0.043 |
| Achromatopsia (no color) | #8E8E8E | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818EAC
#818EAC
oklch(64.7% 0.047 266.7)
- #9B8D6D
#9B8D6D
oklch(64.7% 0.048 87.1)
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 #818EAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.015
- Blue Grey #758DA3 ΔE 0.022
- Light Slate Gray #778899 ΔE 0.034
- Cool Gray #8D99AE ΔE 0.036
- Faded Blue #658CBB ΔE 0.042
- Lavender Gray #7E7F9A ΔE 0.044
- Steel #738595 ΔE 0.044
- Greyblue #77A1B5 ΔE 0.051
Use #818EAC 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.