#3A4552
Closest named color: Dark Grey Blue (#29465B). oklch(38.6% 0.026 252.8), rgb(58, 69, 82).
Aa
White text reads best on this color (9.75:1).
About this color
#3A4552 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.025 away. White text reads best on it, at 9.75:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.15:1 |
| White text | 9.75:1 |
Values
| HEX | #3A4552 |
| RGB | rgb(58, 69, 82) |
| HSL | hsl(213, 17%, 27%) |
| OKLCH | oklch(38.6% 0.026 252.8) |
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 #3A4552 | 9.75:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #3A4552 | 2.15:1 | Fails | Lc 11.3 | Not readable |
| #3A4552 text on white | 9.75:1 | AAA | Lc 92.6 | Preferred for body text |
| #3A4552 text on black | 2.15:1 | Fails | Lc -9.8 | 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
#D4DAE0
oklch(88.6% 0.011 247.9)
-
Step 300
300
#B8C2CD
oklch(81% 0.019 250.6)
-
Step 400
400
#93A2B4
oklch(70.6% 0.031 253)
-
Step 500
500
#788BA2
oklch(63% 0.041 253.3)
-
Step 600
600
#61758D
oklch(55.5% 0.044 253.2)
-
Step 700
700
#506278
oklch(49% 0.042 253.7)
-
Step 800
800
#425061
oklch(42.6% 0.033 253.5)
-
Step 900
900 (this color)
#3A4552
oklch(38.6% 0.026 252.8)
-
Step 950
950
#21272F
oklch(27% 0.017 255.7)
#3A4552 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) | #404553 | 0.010 |
| Deuteranopia (no green cones) | #3E4352 | 0.008 |
| Tritanopia (no blue cones) | #334849 | 0.024 |
| Achromatopsia (no color) | #444444 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4552
#3A4552
oklch(38.6% 0.026 252.8)
- #4D4234
#4D4234
oklch(38.6% 0.027 73.6)
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 #3A4552, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal #264653 ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.026
- Dark Slate Gray #2F4F4F ΔE 0.036
- Onyx #343A40 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark Teal #014D4E ΔE 0.055
- Deep Teal #00555A ΔE 0.061
Use #3A4552 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.