#2D4F4E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.1% 0.04 193.3), rgb(45, 79, 78).
Aa
White text reads best on this color (8.97:1).
About this color
#2D4F4E is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.040 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.003 away. White text reads best on it, at 8.97:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #2D4F4E |
| RGB | rgb(45, 79, 78) |
| HSL | hsl(178, 27%, 24%) |
| OKLCH | oklch(40.1% 0.04 193.3) |
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 #2D4F4E | 8.97:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #2D4F4E | 2.33:1 | Fails | Lc 13.4 | Not readable |
| #2D4F4E text on white | 8.97:1 | AAA | Lc 90.5 | Preferred for body text |
| #2D4F4E text on black | 2.33:1 | Fails | Lc -11.8 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#ABC7C6
oklch(80.9% 0.03 193.9)
-
Step 400
400
#7EAAA9
oklch(70.6% 0.047 194.4)
-
Step 500
500
#5B9594
oklch(63% 0.061 194.3)
-
Step 600
600
#3F807E
oklch(55.7% 0.067 192.8)
-
Step 700
700
#306C6A
oklch(49.1% 0.062 192.4)
-
Step 800
800
#295857
oklch(42.7% 0.051 193.6)
-
Step 900
900 (this color)
#2D4F4E
oklch(40.1% 0.04 193.3)
-
Step 950
950
#172A2A
oklch(26.9% 0.025 195.8)
#2D4F4E 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) | #4B4C4E | 0.042 |
| Deuteranopia (no green cones) | #45474E | 0.040 |
| Tritanopia (no blue cones) | #1E514F | 0.014 |
| Achromatopsia (no color) | #494949 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4F4E
#2D4F4E
oklch(40.1% 0.04 193.3)
- #5C3F42
#5C3F42
oklch(40.1% 0.041 12.2)
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 #2D4F4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.003
- Deep Teal #00555A ΔE 0.032
- Dark Teal #014D4E ΔE 0.032
- Dark Blue Green #005249 ΔE 0.033
- Charcoal #264653 ΔE 0.035
- Dark Grey Blue #29465B ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.045
- Petrol #005F6A ΔE 0.058
Use #2D4F4E 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.