#2D4740
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.034 175.6), rgb(45, 71, 64).
Aa
White text reads best on this color (10.06:1).
About this color
#2D4740 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.034 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.029 away. White text reads best on it, at 10.06:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.034) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.08:1 |
| White text | 10.06:1 |
Values
| HEX | #2D4740 |
| RGB | rgb(45, 71, 64) |
| HSL | hsl(164, 22%, 23%) |
| OKLCH | oklch(37.4% 0.034 175.6) |
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 #2D4740 | 10.06:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #2D4740 | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #2D4740 text on white | 10.06:1 | AAA | Lc 93.3 | Preferred for body text |
| #2D4740 text on black | 2.08:1 | Fails | Lc -9.2 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBE9
oklch(93.5% 0.007 174.4)
-
Step 200
200
#D0DCD9
oklch(88.5% 0.014 179.4)
-
Step 300
300
#B0C6C0
oklch(80.8% 0.025 177.5)
-
Step 400
400
#86A99F
oklch(70.6% 0.041 175.8)
-
Step 500
500
#679488
oklch(63% 0.052 176.1)
-
Step 600
600
#4E7E72
oklch(55.5% 0.056 176.5)
-
Step 700
700
#3E6B5F
oklch(49.1% 0.054 175)
-
Step 800
800
#34574E
oklch(42.7% 0.044 176)
-
Step 900
900 (this color)
#2D4740
oklch(37.4% 0.034 175.6)
-
Step 950
950
#1B2A26
oklch(27% 0.022 176.2)
#2D4740 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) | #454440 | 0.036 |
| Deuteranopia (no green cones) | #414141 | 0.034 |
| Tritanopia (no blue cones) | #264845 | 0.010 |
| Achromatopsia (no color) | #424242 | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4740
#2D4740
oklch(37.4% 0.034 175.6)
- #503942
#503942
oklch(37.4% 0.035 353.7)
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 #2D4740, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.031
- Charcoal #264653 ΔE 0.034
- Dark Teal #014D4E ΔE 0.035
- Dark Blue Green #005249 ΔE 0.041
- Onyx #343A40 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.048
- Evergreen #05472A ΔE 0.054
Use #2D4740 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.