#2F4744
Closest named color: Charcoal Grey (#3C4142). oklch(37.7% 0.03 186.3), rgb(47, 71, 68).
Aa
White text reads best on this color (9.97:1).
About this color
#2F4744 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.030 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.025 away. White text reads best on it, at 9.97:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.10:1 |
| White text | 9.97:1 |
Values
| HEX | #2F4744 |
| RGB | rgb(47, 71, 68) |
| HSL | hsl(173, 20%, 23%) |
| OKLCH | oklch(37.7% 0.03 186.3) |
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 #2F4744 | 9.97:1 | AAA | Lc -97.2 | Preferred for body text |
| Black text on #2F4744 | 2.10:1 | Fails | Lc 10.8 | Not readable |
| #2F4744 text on white | 9.97:1 | AAA | Lc 93.1 | Preferred for body text |
| #2F4744 text on black | 2.10:1 | Fails | Lc -9.4 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D0DCDA
oklch(88.5% 0.013 185.1)
-
Step 300
300
#B1C6C3
oklch(81% 0.023 186.4)
-
Step 400
400
#88A8A4
oklch(70.6% 0.036 187.1)
-
Step 500
500
#69938E
oklch(63.1% 0.047 186.9)
-
Step 600
600
#507D78
oklch(55.6% 0.05 187)
-
Step 700
700
#416A65
oklch(49.2% 0.047 186)
-
Step 800
800
#365652
oklch(42.7% 0.038 186)
-
Step 900
900 (this color)
#2F4744
oklch(37.7% 0.03 186.3)
-
Step 950
950
#1C2A28
oklch(27.2% 0.019 185.2)
#2F4744 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) | #454444 | 0.033 |
| Deuteranopia (no green cones) | #404144 | 0.030 |
| Tritanopia (no blue cones) | #274846 | 0.009 |
| Achromatopsia (no color) | #424242 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4744
#2F4744
oklch(37.7% 0.03 186.3)
- #503B3F
#503B3F
oklch(37.7% 0.03 5.9)
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 #2F4744, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.027
- Charcoal #264653 ΔE 0.028
- Dark Teal #014D4E ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.041
- Onyx #343A40 ΔE 0.042
- Dark Blue Green #005249 ΔE 0.044
- Deep Teal #00555A ΔE 0.052
Use #2F4744 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.