#878FA9
Closest named color: Silver Lake Blue (#778DA9). oklch(65.3% 0.04 271.8), rgb(135, 143, 169).
Aa
Black text reads best on this color (6.53:1).
About this color
#878FA9 is a medium-light, muted blue. In OKLCH its lightness is 65%, its chroma 0.040 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.023 away. Black text reads best on it, at 6.53:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.53:1 |
| White text | 3.21:1 |
Values
| HEX | #878FA9 |
| RGB | rgb(135, 143, 169) |
| HSL | hsl(226, 17%, 60%) |
| OKLCH | oklch(65.3% 0.04 271.8) |
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 #878FA9 | 3.21:1 | AA large text | Lc -64.8 | Content text, not long reading |
| Black text on #878FA9 | 6.53:1 | AA | Lc 44.7 | Non-text elements, placeholder text |
| #878FA9 text on white | 3.21:1 | AA large text | Lc 59.4 | Large or bold text, headings |
| #878FA9 text on black | 6.53:1 | AA | Lc -42.3 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E0
oklch(88.5% 0.01 267.4)
-
Step 300
300
#BCC0CE
oklch(80.9% 0.02 273.2)
-
Step 400
400
#99A0B5
oklch(70.7% 0.032 270.9)
-
Step 500
500 (this color)
#878FA9
oklch(65.3% 0.04 271.8)
-
Step 600
600
#6A728D
oklch(55.5% 0.043 272)
-
Step 700
700
#586078
oklch(49.1% 0.04 270.5)
-
Step 800
800
#484E62
oklch(42.6% 0.034 271.8)
-
Step 900
900
#3C4150
oklch(37.7% 0.027 270.6)
-
Step 950
950
#23262F
oklch(26.9% 0.017 270.7)
#878FA9 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) | #8891AA | 0.006 |
| Deuteranopia (no green cones) | #858EA8 | 0.004 |
| Tritanopia (no blue cones) | #7F9497 | 0.037 |
| Achromatopsia (no color) | #8F8F8F | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #878FA9
#878FA9
oklch(65.3% 0.04 271.8)
- #999075
#999075
oklch(65.4% 0.04 91.8)
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 #878FA9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.023
- Blue Grey #758DA3 ΔE 0.027
- Cool Gray #8D99AE ΔE 0.029
- Light Slate Gray #778899 ΔE 0.037
- Bluey Grey #89A0B0 ΔE 0.046
- Lavender Gray #7E7F9A ΔE 0.048
- Steel #738595 ΔE 0.048
- Purpley Grey #947E94 ΔE 0.049
Use #878FA9 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.