#434855
Closest named color: Charcoal Grey (#3C4142). oklch(40.2% 0.023 268.7), rgb(67, 72, 85).
Aa
White text reads best on this color (9.14:1).
About this color
#434855 is a dark close to neutral grey. In OKLCH its lightness is 40%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.037 away. White text reads best on it, at 9.14:1.
| Hue family | Neutrals |
| Lightness | dark (40%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.29:1 |
| White text | 9.14:1 |
Values
| HEX | #434855 |
| RGB | rgb(67, 72, 85) |
| HSL | hsl(223, 12%, 30%) |
| OKLCH | oklch(40.2% 0.023 268.7) |
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 #434855 | 9.14:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #434855 | 2.29:1 | Fails | Lc 12.9 | Not readable |
| #434855 text on white | 9.14:1 | AAA | Lc 91.1 | Preferred for body text |
| #434855 text on black | 2.29:1 | 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
#E9EAEC
oklch(93.7% 0.003 264.5)
-
Step 200
200
#D7D9DE
oklch(88.5% 0.007 268.5)
-
Step 300
300
#BDC0CA
oklch(80.8% 0.014 272.7)
-
Step 400
400
#9BA0AE
oklch(70.6% 0.021 270.1)
-
Step 500
500
#82899B
oklch(63% 0.028 268.7)
-
Step 600
600
#6C7385
oklch(55.6% 0.029 268.6)
-
Step 700
700
#5A6071
oklch(49% 0.028 270)
-
Step 800
800 (this color)
#434855
oklch(40.2% 0.023 268.7)
-
Step 900
900
#3E414B
oklch(37.6% 0.018 272.3)
-
Step 950
950
#24262C
oklch(26.9% 0.012 271)
#434855 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) | #444956 | 0.004 |
| Deuteranopia (no green cones) | #434755 | 0.003 |
| Tritanopia (no blue cones) | #3F4A4C | 0.020 |
| Achromatopsia (no color) | #484848 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #434855
#434855
oklch(40.2% 0.023 268.7)
- #4D483A
#4D483A
oklch(40.2% 0.023 90.7)
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 #434855, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.038
- Charcoal #264653 ΔE 0.041
- Onyx #343A40 ΔE 0.058
- Deep Teal #00555A ΔE 0.065
- Dark Teal #014D4E ΔE 0.065
- YInMn Blue #415A77 ΔE 0.068
Use #434855 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.