#878E9A
Closest named color: Blue Grey (#758DA3). oklch(64.5% 0.02 261.3), rgb(135, 142, 154).
Aa
Black text reads best on this color (6.36:1).
About this color
#878E9A is a medium-light close to neutral grey. In OKLCH its lightness is 64%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Blue Grey (#758DA3), ΔE 0.028 away. Black text reads best on it, at 6.36:1.
| Hue family | Neutrals |
| Lightness | medium-light (64%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 6.36:1 |
| White text | 3.29:1 |
Values
| HEX | #878E9A |
| RGB | rgb(135, 142, 154) |
| HSL | hsl(218, 9%, 57%) |
| OKLCH | oklch(64.5% 0.02 261.3) |
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 #878E9A | 3.29:1 | AA large text | Lc -65.8 | Content text, not long reading |
| Black text on #878E9A | 6.36:1 | AA | Lc 43.7 | Non-text elements, placeholder text |
| #878E9A text on white | 3.29:1 | AA large text | Lc 60.4 | Content text, not long reading |
| #878E9A text on black | 6.36:1 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E9EAEC
oklch(93.7% 0.003 264.5)
-
Step 200
200
#D7D9DD
oklch(88.5% 0.006 264.5)
-
Step 300
300
#BDC1C7
oklch(81% 0.01 258.3)
-
Step 400
400
#9BA1AA
oklch(70.7% 0.015 258.4)
-
Step 500
500 (this color)
#878E9A
oklch(64.5% 0.02 261.3)
-
Step 600
600
#6C7480
oklch(55.6% 0.021 258.4)
-
Step 700
700
#5A616C
oklch(49% 0.02 259.4)
-
Step 800
800
#4A4F58
oklch(42.6% 0.016 262.3)
-
Step 900
900
#3E4249
oklch(37.8% 0.013 261.7)
-
Step 950
950
#24272B
oklch(27.1% 0.009 255.6)
#878E9A 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) | #8A8E9B | 0.005 |
| Deuteranopia (no green cones) | #888D9A | 0.003 |
| Tritanopia (no blue cones) | #839092 | 0.016 |
| Achromatopsia (no color) | #8D8D8D | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #878E9A
#878E9A
oklch(64.5% 0.02 261.3)
- #948D80
#948D80
oklch(64.6% 0.021 83)
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 #878E9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.028
- Light Slate Gray #778899 ΔE 0.029
- Silver Lake Blue #778DA9 ΔE 0.031
- Warm Grey #978A84 ΔE 0.036
- Cool Gray #8D99AE ΔE 0.038
- Steel #738595 ΔE 0.040
- Purpley Grey #947E94 ΔE 0.045
- English Lavender #9D8189 ΔE 0.045
Use #878E9A 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.