#2F4956
Closest named color: Charcoal (#264653). oklch(39% 0.039 230.7), rgb(47, 73, 86).
Aa
White text reads best on this color (9.50:1).
About this color
#2F4956 is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.039 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.016 away. White text reads best on it, at 9.50:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.20:1 |
| White text | 9.50:1 |
Values
| HEX | #2F4956 |
| RGB | rgb(47, 73, 86) |
| HSL | hsl(200, 29%, 26%) |
| OKLCH | oklch(39% 0.039 230.7) |
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 #2F4956 | 9.50:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #2F4956 | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #2F4956 text on white | 9.50:1 | AAA | Lc 92.0 | Preferred for body text |
| #2F4956 text on black | 2.20:1 | Fails | Lc -10.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AFC5D0
oklch(81% 0.029 229.3)
-
Step 400
400
#84A6B8
oklch(70.6% 0.046 231.3)
-
Step 500
500
#6490A7
oklch(63% 0.059 231.7)
-
Step 600
600
#4A7A92
oklch(55.5% 0.064 231.2)
-
Step 700
700
#3B677D
oklch(49.1% 0.06 231.5)
-
Step 800
800
#315465
oklch(42.7% 0.049 230.5)
-
Step 900
900 (this color)
#2F4956
oklch(39% 0.039 230.7)
-
Step 950
950
#1A2930
oklch(27.1% 0.024 228.7)
#2F4956 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) | #434857 | 0.028 |
| Deuteranopia (no green cones) | #3D4456 | 0.024 |
| Tritanopia (no blue cones) | #1F4D4D | 0.029 |
| Achromatopsia (no color) | #464646 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4956
#2F4956
oklch(39% 0.039 230.7)
- #563F32
#563F32
oklch(38.9% 0.039 50.7)
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 #2F4956, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.016
- Dark Grey Blue #29465B ΔE 0.017
- Dark Slate Gray #2F4F4F ΔE 0.026
- Charcoal Grey #3C4142 ΔE 0.037
- Dark Teal #014D4E ΔE 0.040
- Deep Teal #00555A ΔE 0.045
- Onyx #343A40 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.052
Use #2F4956 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.