#878BB0
Closest named color: Silver Lake Blue (#778DA9). oklch(64.7% 0.055 279.9), rgb(135, 139, 176).
Aa
Black text reads best on this color (6.35:1).
About this color
#878BB0 is a medium-light, muted blue. In OKLCH its lightness is 65%, its chroma 0.055 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.026 away. Black text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.35:1 |
| White text | 3.30:1 |
Values
| HEX | #878BB0 |
| RGB | rgb(135, 139, 176) |
| HSL | hsl(234, 21%, 61%) |
| OKLCH | oklch(64.7% 0.055 279.9) |
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 #878BB0 | 3.30:1 | AA large text | Lc -65.9 | Content text, not long reading |
| Black text on #878BB0 | 6.35:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #878BB0 text on white | 3.30:1 | AA large text | Lc 60.5 | Content text, not long reading |
| #878BB0 text on black | 6.35:1 | AA | Lc -41.3 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D7D8E3
oklch(88.5% 0.015 281.9)
-
Step 300
300
#BDBFD2
oklch(80.9% 0.027 281)
-
Step 400
400
#9B9EBC
oklch(70.7% 0.044 280.7)
-
Step 500
500 (this color)
#878BB0
oklch(64.7% 0.055 279.9)
-
Step 600
600
#6C7096
oklch(55.6% 0.059 279.6)
-
Step 700
700
#5A5D80
oklch(49% 0.056 280.3)
-
Step 800
800
#4A4C68
oklch(42.6% 0.046 281.1)
-
Step 900
900
#3D4055
oklch(37.8% 0.036 278.2)
-
Step 950
950
#242532
oklch(26.9% 0.024 281.2)
#878BB0 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) | #818FB2 | 0.013 |
| Deuteranopia (no green cones) | #7F8CAF | 0.011 |
| Tritanopia (no blue cones) | #7D9297 | 0.051 |
| Achromatopsia (no color) | #8D8D8D | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #878BB0
#878BB0
oklch(64.7% 0.055 279.9)
- #968F68
#968F68
oklch(64.6% 0.055 99.2)
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 #878BB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.026
- Blue Grey #758DA3 ΔE 0.034
- Cool Gray #8D99AE ΔE 0.042
- Light Slate Gray #778899 ΔE 0.043
- Lavender Gray #7E7F9A ΔE 0.044
- Heather #A484AC ΔE 0.045
- Faded Blue #658CBB ΔE 0.045
- Purpley Grey #947E94 ΔE 0.048
Use #878BB0 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.