#878EAF
Closest named color: Silver Lake Blue (#778DA9). oklch(65.3% 0.05 275.6), rgb(135, 142, 175).
Aa
Black text reads best on this color (6.51:1).
About this color
#878EAF is a medium-light, muted blue. In OKLCH its lightness is 65%, its chroma 0.050 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.024 away. Black text reads best on it, at 6.51:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.51:1 |
| White text | 3.22:1 |
Values
| HEX | #878EAF |
| RGB | rgb(135, 142, 175) |
| HSL | hsl(229, 20%, 61%) |
| OKLCH | oklch(65.3% 0.05 275.6) |
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 #878EAF | 3.22:1 | AA large text | Lc -64.9 | Content text, not long reading |
| Black text on #878EAF | 6.51:1 | AA | Lc 44.6 | Non-text elements, placeholder text |
| #878EAF text on white | 3.22:1 | AA large text | Lc 59.5 | Large or bold text, headings |
| #878EAF text on black | 6.51:1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9EF
oklch(93.5% 0.008 278.6)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BCC0D1
oklch(81% 0.024 275.3)
-
Step 400
400
#999FB9
oklch(70.6% 0.039 275.1)
-
Step 500
500 (this color)
#878EAF
oklch(65.3% 0.05 275.6)
-
Step 600
600
#6A7193
oklch(55.6% 0.054 275.5)
-
Step 700
700
#585F7E
oklch(49.2% 0.05 274.5)
-
Step 800
800
#484D66
oklch(42.6% 0.042 275.7)
-
Step 900
900
#3C4053
oklch(37.6% 0.033 275.4)
-
Step 950
950
#232631
oklch(27% 0.021 273)
#878EAF 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) | #8591B1 | 0.008 |
| Deuteranopia (no green cones) | #828EAE | 0.007 |
| Tritanopia (no blue cones) | #7D9499 | 0.045 |
| Achromatopsia (no color) | #8F8F8F | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #878EAF
#878EAF
oklch(65.3% 0.05 275.6)
- #99906E
#99906E
oklch(65.2% 0.049 95)
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 #878EAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.024
- Blue Grey #758DA3 ΔE 0.032
- Cool Gray #8D99AE ΔE 0.033
- Light Slate Gray #778899 ΔE 0.042
- Faded Blue #658CBB ΔE 0.047
- Heather #A484AC ΔE 0.048
- Lavender Gray #7E7F9A ΔE 0.049
- Bluey Grey #89A0B0 ΔE 0.051
Use #878EAF 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.