#818EBE
Closest named color: Silver Lake Blue (#778DA9). oklch(65.4% 0.073 272.5), rgb(129, 142, 190).
Aa
Black text reads best on this color (6.54:1).
About this color
#818EBE is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.073 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.036 away. Black text reads best on it, at 6.54:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.54:1 |
| White text | 3.20:1 |
Values
| HEX | #818EBE |
| RGB | rgb(129, 142, 190) |
| HSL | hsl(227, 32%, 63%) |
| OKLCH | oklch(65.4% 0.073 272.5) |
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 #818EBE | 3.20:1 | AA large text | Lc -64.7 | Content text, not long reading |
| Black text on #818EBE | 6.54:1 | AA | Lc 44.8 | Non-text elements, placeholder text |
| #818EBE text on white | 3.20:1 | AA large text | Lc 59.3 | Large or bold text, headings |
| #818EBE text on black | 6.54:1 | 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF1
oklch(93.7% 0.01 267.4)
-
Step 200
200
#D4D9E7
oklch(88.6% 0.02 270.2)
-
Step 300
300
#B8C0D9
oklch(81% 0.036 271.5)
-
Step 400
400
#949FC5
oklch(70.7% 0.057 272.3)
-
Step 500
500 (this color)
#818EBE
oklch(65.4% 0.073 272.5)
-
Step 600
600
#6370A2
oklch(55.5% 0.08 272.4)
-
Step 700
700
#525E8B
oklch(49.1% 0.074 272)
-
Step 800
800
#434D71
oklch(42.7% 0.061 271.7)
-
Step 900
900
#39405B
oklch(37.7% 0.047 272.8)
-
Step 950
950
#212635
oklch(27.1% 0.029 270.1)
#818EBE 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) | #7F92C0 | 0.011 |
| Deuteranopia (no green cones) | #7A8DBD | 0.010 |
| Tritanopia (no blue cones) | #70979F | 0.065 |
| Achromatopsia (no color) | #909090 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #818EBE
#818EBE
oklch(65.4% 0.073 272.5)
- #A0905B
#A0905B
oklch(65.5% 0.074 93.2)
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 #818EBE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.036
- Faded Blue #658CBB ΔE 0.037
- Blue Grey #758DA3 ΔE 0.045
- Cool Gray #8D99AE ΔE 0.048
- Heather #A484AC ΔE 0.057
- Light Slate Gray #778899 ΔE 0.058
- Greyblue #77A1B5 ΔE 0.059
- Lavender Gray #7E7F9A ΔE 0.060
Use #818EBE 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.