#434857
Closest named color: Dark Grey Blue (#29465B). oklch(40.3% 0.026 270.7), rgb(67, 72, 87).
Aa
White text reads best on this color (9.11:1).
About this color
#434857 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.038 away. White text reads best on it, at 9.11:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.30:1 |
| White text | 9.11:1 |
Values
| HEX | #434857 |
| RGB | rgb(67, 72, 87) |
| HSL | hsl(225, 13%, 30%) |
| OKLCH | oklch(40.3% 0.026 270.7) |
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 #434857 | 9.11:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #434857 | 2.30:1 | Fails | Lc 13.0 | Not readable |
| #434857 text on white | 9.11:1 | AAA | Lc 91.0 | Preferred for body text |
| #434857 text on black | 2.30:1 | Fails | Lc -11.3 | 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 800.
-
Step 50
50
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9EAED
oklch(93.7% 0.004 271.4)
-
Step 200
200
#D7D9DF
oklch(88.6% 0.008 271.3)
-
Step 300
300
#BDC0CB
oklch(80.9% 0.016 273.8)
-
Step 400
400
#9BA0B0
oklch(70.7% 0.024 271.9)
-
Step 500
500
#82899D
oklch(63.1% 0.031 270.2)
-
Step 600
600
#6C7388
oklch(55.7% 0.034 270.7)
-
Step 700
700
#5A6073
oklch(49.1% 0.031 271.4)
-
Step 800
800 (this color)
#434857
oklch(40.3% 0.026 270.7)
-
Step 900
900
#3D414D
oklch(37.6% 0.021 270.8)
-
Step 950
950
#24262D
oklch(27% 0.013 272.9)
#434857 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) | #444958 | 0.004 |
| Deuteranopia (no green cones) | #424757 | 0.004 |
| Tritanopia (no blue cones) | #3E4B4D | 0.024 |
| Achromatopsia (no color) | #484848 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434857
#434857
oklch(40.3% 0.026 270.7)
- #4E4839
#4E4839
oklch(40.3% 0.025 88.8)
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 #434857, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.040
- Charcoal #264653 ΔE 0.042
- Onyx #343A40 ΔE 0.060
- Deep Teal #00555A ΔE 0.065
- YInMn Blue #415A77 ΔE 0.066
- Dark Teal #014D4E ΔE 0.066
Use #434857 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.