#2D4741
Closest named color: Charcoal Grey (#3C4142). oklch(37.5% 0.034 178.3), rgb(45, 71, 65).
Aa
White text reads best on this color (10.05:1).
About this color
#2D4741 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.034 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.028 away. White text reads best on it, at 10.05:1.
| 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 | 10.05:1 |
Values
| HEX | #2D4741 |
| RGB | rgb(45, 71, 65) |
| HSL | hsl(166, 22%, 23%) |
| OKLCH | oklch(37.5% 0.034 178.3) |
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 #2D4741 | 10.05:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #2D4741 | 2.08:1 | Fails | Lc 10.6 | Not readable |
| #2D4741 text on white | 10.05:1 | AAA | Lc 93.3 | Preferred for body text |
| #2D4741 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
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D0DCD9
oklch(88.5% 0.014 179.4)
-
Step 300
300
#B0C6C1
oklch(80.8% 0.025 180.5)
-
Step 400
400
#86A9A1
oklch(70.6% 0.04 179.6)
-
Step 500
500
#67948A
oklch(63.1% 0.051 179.2)
-
Step 600
600
#4E7E73
oklch(55.5% 0.055 178)
-
Step 700
700
#3E6B61
oklch(49.2% 0.053 178.2)
-
Step 800
800
#34574F
oklch(42.7% 0.043 178)
-
Step 900
900 (this color)
#2D4741
oklch(37.5% 0.034 178.3)
-
Step 950
950
#1B2A26
oklch(27% 0.022 176.2)
#2D4741 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) | #454441 | 0.036 |
| Deuteranopia (no green cones) | #404141 | 0.032 |
| Tritanopia (no blue cones) | #254845 | 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°).
- #2D4741
#2D4741
oklch(37.5% 0.034 178.3)
- #503A41
#503A41
oklch(37.5% 0.033 357.9)
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 #2D4741, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.028
- Dark Slate Gray #2F4F4F ΔE 0.030
- Charcoal #264653 ΔE 0.033
- Dark Teal #014D4E ΔE 0.035
- Dark Blue Green #005249 ΔE 0.041
- Onyx #343A40 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.046
- Deep Teal #00555A ΔE 0.053
Use #2D4741 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.