#424156
Closest named color: Dark Grey Blue (#29465B). oklch(38.5% 0.035 286.8), rgb(66, 65, 86).
Aa
White text reads best on this color (9.89:1).
About this color
#424156 is a dark, muted purple. In OKLCH its lightness is 38%, its chroma 0.035 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.036 away. White text reads best on it, at 9.89:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.12:1 |
| White text | 9.89:1 |
Values
| HEX | #424156 |
| RGB | rgb(66, 65, 86) |
| HSL | hsl(243, 14%, 30%) |
| OKLCH | oklch(38.5% 0.035 286.8) |
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 #424156 | 9.89:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #424156 | 2.12:1 | Fails | Lc 11.0 | Not readable |
| #424156 text on white | 9.89:1 | AAA | Lc 93.0 | Preferred for body text |
| #424156 text on black | 2.12:1 | Fails | Lc -9.5 | Not readable |
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 900.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9EF
oklch(93.6% 0.008 286.2)
-
Step 200
200
#D8D8E3
oklch(88.5% 0.015 286.1)
-
Step 300
300
#BFBED1
oklch(80.8% 0.027 288.2)
-
Step 400
400
#9E9DBA
oklch(70.7% 0.042 286.9)
-
Step 500
500
#8785A9
oklch(63.1% 0.054 287.3)
-
Step 600
600
#706E95
oklch(55.5% 0.06 286.6)
-
Step 700
700
#5E5C7F
oklch(49.1% 0.056 286.8)
-
Step 800
800
#4D4B67
oklch(42.6% 0.046 287.5)
-
Step 900
900 (this color)
#424156
oklch(38.5% 0.035 286.8)
-
Step 950
950
#252531
oklch(27% 0.022 284.8)
#424156 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) | #3C4457 | 0.012 |
| Deuteranopia (no green cones) | #3B4255 | 0.012 |
| Tritanopia (no blue cones) | #3E4548 | 0.032 |
| Achromatopsia (no color) | #434343 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #424156
#424156
oklch(38.5% 0.035 286.8)
- #46452F
#46452F
oklch(38.5% 0.035 105.7)
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 #424156, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.037
- Charcoal #264653 ΔE 0.042
- Onyx #343A40 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.058
- Prussian Blue #1D3557 ΔE 0.070
- Gunmetal #293241 ΔE 0.071
Use #424156 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.