#39505D
Closest named color: Dark Slate Gray (#2F4F4F). oklch(41.8% 0.036 233.5), rgb(57, 80, 93).
Aa
White text reads best on this color (8.46:1).
About this color
#39505D is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.036 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.028 away. White text reads best on it, at 8.46:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.47:1 |
| White text | 8.46:1 |
Values
| HEX | #39505D |
| RGB | rgb(57, 80, 93) |
| HSL | hsl(202, 24%, 29%) |
| OKLCH | oklch(41.8% 0.036 233.5) |
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 #39505D | 8.46:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #39505D | 2.47:1 | Fails | Lc 14.9 | Not readable |
| #39505D text on white | 8.46:1 | AAA | Lc 89.1 | Fine for body text |
| #39505D text on black | 2.47:1 | Fails | Lc -13.1 | 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 800.
-
Step 50
50
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBE0
oklch(88.6% 0.012 231.7)
-
Step 300
300
#B4C3CC
oklch(80.8% 0.021 233.9)
-
Step 400
400
#8DA5B2
oklch(70.8% 0.033 231.5)
-
Step 500
500
#708E9F
oklch(63% 0.042 233.2)
-
Step 600
600
#58788A
oklch(55.5% 0.046 233.3)
-
Step 700
700
#486576
oklch(49.1% 0.044 234.6)
-
Step 800
800 (this color)
#39505D
oklch(41.8% 0.036 233.5)
-
Step 900
900
#33444E
oklch(37.6% 0.028 234.3)
-
Step 950
950
#1E282E
oklch(27% 0.018 234.7)
#39505D 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) | #4A4F5E | 0.024 |
| Deuteranopia (no green cones) | #454B5D | 0.022 |
| Tritanopia (no blue cones) | #2C5454 | 0.028 |
| Achromatopsia (no color) | #4D4D4D | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39505D
#39505D
oklch(41.8% 0.036 233.5)
- #5C473A
#5C473A
oklch(41.6% 0.036 53.2)
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 #39505D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.040
- Charcoal #264653 ΔE 0.044
- Deep Teal #00555A ΔE 0.044
- YInMn Blue #415A77 ΔE 0.049
- Petrol #005F6A ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.055
- Dark Teal #014D4E ΔE 0.056
Use #39505D 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.