#878FCB
Closest named color: Perrywinkle (#8F8CE7). oklch(66.7% 0.089 277.8), rgb(135, 143, 203).
Aa
Black text reads best on this color (6.82:1).
About this color
#878FCB is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.089 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Perrywinkle (#8F8CE7), ΔE 0.047 away. Black text reads best on it, at 6.82:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Perrywinkle (#8F8CE7) |
| Black text | 6.82:1 |
| White text | 3.07:1 |
Values
| HEX | #878FCB |
| RGB | rgb(135, 143, 203) |
| HSL | hsl(233, 40%, 66%) |
| OKLCH | oklch(66.7% 0.089 277.8) |
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 #878FCB | 3.07:1 | AA large text | Lc -63.0 | Content text, not long reading |
| Black text on #878FCB | 6.82:1 | AA | Lc 46.4 | Large or bold text, headings |
| #878FCB text on white | 3.07:1 | AA large text | Lc 57.7 | Large or bold text, headings |
| #878FCB text on black | 6.82:1 | AA | Lc -44.1 | 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
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D5D8EA
oklch(88.5% 0.025 278.3)
-
Step 300
300
#B9BFDD
oklch(81% 0.043 276.5)
-
Step 400
400
#969DCC
oklch(70.7% 0.069 277.9)
-
Step 500
500 (this color)
#878FCB
oklch(66.7% 0.089 277.8)
-
Step 600
600
#666DAC
oklch(55.6% 0.098 277.9)
-
Step 700
700
#555B93
oklch(49.1% 0.09 277.9)
-
Step 800
800
#454A78
oklch(42.6% 0.076 277.9)
-
Step 900
900
#3A3E60
oklch(37.6% 0.058 278.1)
-
Step 950
950
#222538
oklch(27.1% 0.036 276.8)
#878FCB 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) | #7D96CE | 0.021 |
| Deuteranopia (no green cones) | #7890CA | 0.020 |
| Tritanopia (no blue cones) | #759AA4 | 0.079 |
| Achromatopsia (no color) | #939393 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #878FCB
#878FCB
oklch(66.7% 0.089 277.8)
- #A39552
#A39552
oklch(66.7% 0.089 97.8)
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 #878FCB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Perrywinkle #8F8CE7 ΔE 0.047
- Faded Blue #658CBB ΔE 0.052
- Silver Lake Blue #778DA9 ΔE 0.057
- Cool Gray #8D99AE ΔE 0.059
- Heather #A484AC ΔE 0.060
- Cornflower Blue #6495ED ΔE 0.062
- Wisteria #A87DC2 ΔE 0.063
- Blue Grey #758DA3 ΔE 0.067
Use #878FCB 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.