#404254
Closest named color: Charcoal Grey (#3C4142). oklch(38.5% 0.031 279.9), rgb(64, 66, 84).
Aa
White text reads best on this color (9.88:1).
About this color
#404254 is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.031 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.032 away. White text reads best on it, at 9.88:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.12:1 |
| White text | 9.88:1 |
Values
| HEX | #404254 |
| RGB | rgb(64, 66, 84) |
| HSL | hsl(234, 14%, 29%) |
| OKLCH | oklch(38.5% 0.031 279.9) |
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 #404254 | 9.88:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #404254 | 2.12:1 | Fails | Lc 11.0 | Not readable |
| #404254 text on white | 9.88:1 | AAA | Lc 92.9 | Preferred for body text |
| #404254 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BDBFD0
oklch(80.8% 0.024 280.5)
-
Step 400
400
#9B9FB8
oklch(70.8% 0.037 278.2)
-
Step 500
500
#8387A6
oklch(63.1% 0.047 279.2)
-
Step 600
600
#6D7091
oklch(55.5% 0.051 280.5)
-
Step 700
700
#5B5E7C
oklch(49.1% 0.048 280)
-
Step 800
800
#4A4D65
oklch(42.7% 0.04 279)
-
Step 900
900 (this color)
#404254
oklch(38.5% 0.031 279.9)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#404254 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) | #3D4455 | 0.007 |
| Deuteranopia (no green cones) | #3C4254 | 0.006 |
| Tritanopia (no blue cones) | #3B4548 | 0.027 |
| Achromatopsia (no color) | #434343 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #404254
#404254
oklch(38.5% 0.031 279.9)
- #474431
#474431
oklch(38.4% 0.031 100.1)
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 #404254, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.032
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.037
- Onyx #343A40 ΔE 0.044
- Dark Slate Gray #2F4F4F ΔE 0.050
- Dark Blue Grey #1F3B4D ΔE 0.055
- Dark Teal #014D4E ΔE 0.068
- Gunmetal #293241 ΔE 0.070
Use #404254 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.