#878CBC
Closest named color: Silver Lake Blue (#778DA9). oklch(65.4% 0.072 279.6), rgb(135, 140, 188).
Aa
Black text reads best on this color (6.50:1).
About this color
#878CBC is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.072 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Silver Lake Blue (#778DA9), ΔE 0.038 away. Black text reads best on it, at 6.50:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Silver Lake Blue (#778DA9) |
| Black text | 6.50:1 |
| White text | 3.22:1 |
Values
| HEX | #878CBC |
| RGB | rgb(135, 140, 188) |
| HSL | hsl(234, 28%, 63%) |
| OKLCH | oklch(65.4% 0.072 279.6) |
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 #878CBC | 3.22:1 | AA large text | Lc -64.9 | Content text, not long reading |
| Black text on #878CBC | 6.50:1 | AA | Lc 44.6 | Non-text elements, placeholder text |
| #878CBC text on white | 3.22:1 | AA large text | Lc 59.5 | Large or bold text, headings |
| #878CBC text on black | 6.50:1 | AA | Lc -42.2 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E8E9F1
oklch(93.6% 0.011 280.5)
-
Step 200
200
#D6D8E6
oklch(88.5% 0.019 279.5)
-
Step 300
300
#BBBFD8
oklch(80.9% 0.035 278.4)
-
Step 400
400
#999DC4
oklch(70.6% 0.057 280.2)
-
Step 500
500 (this color)
#878CBC
oklch(65.4% 0.072 279.6)
-
Step 600
600
#6A6EA0
oklch(55.5% 0.078 280)
-
Step 700
700
#585C89
oklch(49% 0.072 279.5)
-
Step 800
800
#484B70
oklch(42.6% 0.061 279.9)
-
Step 900
900
#3C3F5A
oklch(37.7% 0.046 279)
-
Step 950
950
#232535
oklch(27% 0.03 278.7)
#878CBC 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) | #7E91BE | 0.017 |
| Deuteranopia (no green cones) | #7C8DBB | 0.015 |
| Tritanopia (no blue cones) | #7A959D | 0.063 |
| Achromatopsia (no color) | #8F8F8F | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #878CBC
#878CBC
oklch(65.4% 0.072 279.6)
- #9B925E
#9B925E
oklch(65.5% 0.072 99.6)
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 #878CBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Silver Lake Blue #778DA9 ΔE 0.038
- Faded Blue #658CBB ΔE 0.044
- Blue Grey #758DA3 ΔE 0.048
- Heather #A484AC ΔE 0.048
- Cool Gray #8D99AE ΔE 0.049
- Lavender Gray #7E7F9A ΔE 0.058
- Light Slate Gray #778899 ΔE 0.059
- Dusty Lavender #AC86A8 ΔE 0.060
Use #878CBC 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.