#363F4E
Closest named color: Charcoal Grey (#3C4142). oklch(36.6% 0.029 260.6), rgb(54, 63, 78).
Aa
White text reads best on this color (10.61:1).
About this color
#363F4E 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 Grey (#3C4142), ΔE 0.025 away. White text reads best on it, at 10.61:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.97:1 |
| White text | 10.61:1 |
Values
| HEX | #363F4E |
| RGB | rgb(54, 63, 78) |
| HSL | hsl(218, 18%, 26%) |
| OKLCH | oklch(36.6% 0.029 260.6) |
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 #363F4E | 10.61:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #363F4E | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #363F4E text on white | 10.61:1 | AAA | Lc 94.6 | Preferred for body text |
| #363F4E text on black | 1.97:1 | Fails | Lc -8.0 | 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
#D5D9E1
oklch(88.5% 0.012 264.5)
-
Step 300
300
#B9C1CF
oklch(80.9% 0.022 261.8)
-
Step 400
400
#95A1B7
oklch(70.7% 0.035 262.6)
-
Step 500
500
#7A8AA5
oklch(63% 0.045 260.9)
-
Step 600
600
#637490
oklch(55.6% 0.048 260.3)
-
Step 700
700
#52617A
oklch(49% 0.044 260.5)
-
Step 800
800
#434F63
oklch(42.5% 0.037 260.6)
-
Step 900
900 (this color)
#363F4E
oklch(36.6% 0.029 260.6)
-
Step 950
950
#21272F
oklch(27% 0.017 255.7)
#363F4E 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) | #3A404F | 0.007 |
| Deuteranopia (no green cones) | #383D4E | 0.007 |
| Tritanopia (no blue cones) | #2F4244 | 0.025 |
| Achromatopsia (no color) | #3E3E3E | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #363F4E
#363F4E
oklch(36.6% 0.029 260.6)
- #473D2D
#473D2D
oklch(36.6% 0.029 79.3)
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 #363F4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.025
- Onyx #343A40 ΔE 0.026
- Charcoal #264653 ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.035
- Gunmetal #293241 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.052
- Midnight Green #073B4C ΔE 0.053
Use #363F4E 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.