#34404E
Closest named color: Charcoal (#264653). oklch(36.7% 0.029 252.5), rgb(52, 64, 78).
Aa
White text reads best on this color (10.55:1).
About this color
#34404E is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Charcoal (#264653), ΔE 0.024 away. White text reads best on it, at 10.55:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal (#264653) |
| Black text | 1.98:1 |
| White text | 10.55:1 |
Values
| HEX | #34404E |
| RGB | rgb(52, 64, 78) |
| HSL | hsl(212, 20%, 25%) |
| OKLCH | oklch(36.7% 0.029 252.5) |
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 #34404E | 10.55:1 | AAA | Lc -98.4 | Preferred for body text |
| Black text on #34404E | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #34404E text on white | 10.55:1 | AAA | Lc 94.5 | Preferred for body text |
| #34404E text on black | 1.98:1 | Fails | Lc -8.1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4DAE1
oklch(88.6% 0.012 252.1)
-
Step 300
300
#B7C2CF
oklch(81% 0.022 252.5)
-
Step 400
400
#92A2B6
oklch(70.6% 0.034 254.1)
-
Step 500
500
#778CA4
oklch(63.2% 0.044 251.9)
-
Step 600
600
#5F758F
oklch(55.5% 0.048 252.9)
-
Step 700
700
#4E637A
oklch(49.2% 0.045 251)
-
Step 800
800
#405063
oklch(42.5% 0.038 253)
-
Step 900
900 (this color)
#34404E
oklch(36.7% 0.029 252.5)
-
Step 950
950
#20272F
oklch(26.9% 0.018 251.9)
#34404E 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) | #3B404F | 0.011 |
| Deuteranopia (no green cones) | #383E4E | 0.008 |
| Tritanopia (no blue cones) | #2C4345 | 0.024 |
| Achromatopsia (no color) | #3F3F3F | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34404E
#34404E
oklch(36.7% 0.029 252.5)
- #483D2E
#483D2E
oklch(36.7% 0.029 75.3)
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 #34404E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.024
- Charcoal Grey #3C4142 ΔE 0.025
- Onyx #343A40 ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.027
- Dark Blue Grey #1F3B4D ΔE 0.034
- Dark Slate Gray #2F4F4F ΔE 0.049
- Gunmetal #293241 ΔE 0.051
- Midnight Green #073B4C ΔE 0.051
Use #34404E 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.