#2D4640
Closest named color: Charcoal Grey (#3C4142). oklch(37.2% 0.033 177.7), rgb(45, 70, 64).
Aa
White text reads best on this color (10.18:1).
About this color
#2D4640 is a dark, muted teal or cyan. In OKLCH its lightness is 37%, its chroma 0.033 and its hue 178°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.027 away. White text reads best on it, at 10.18:1.
| Hue family | Teals and cyans |
| Lightness | dark (37%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.06:1 |
| White text | 10.18:1 |
Values
| HEX | #2D4640 |
| RGB | rgb(45, 70, 64) |
| HSL | hsl(166, 22%, 23%) |
| OKLCH | oklch(37.2% 0.033 177.7) |
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 #2D4640 | 10.18:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #2D4640 | 2.06:1 | Fails | Lc 10.3 | Not readable |
| #2D4640 text on white | 10.18:1 | AAA | Lc 93.6 | Preferred for body text |
| #2D4640 text on black | 2.06:1 | Fails | Lc -8.9 | 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
#B1C6C0
oklch(80.9% 0.024 176.7)
-
Step 400
400
#87A9A0
oklch(70.7% 0.04 177.2)
-
Step 500
500
#699489
oklch(63.2% 0.05 177)
-
Step 600
600
#4F7E73
oklch(55.6% 0.054 177.7)
-
Step 700
700
#406A60
oklch(49% 0.05 177.3)
-
Step 800
800
#35574F
oklch(42.8% 0.042 177.6)
-
Step 900
900 (this color)
#2D4640
oklch(37.2% 0.033 177.7)
-
Step 950
950
#1B2A26
oklch(27% 0.022 176.2)
#2D4640 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) | #444340 | 0.034 |
| Deuteranopia (no green cones) | #404040 | 0.033 |
| Tritanopia (no blue cones) | #264744 | 0.009 |
| Achromatopsia (no color) | #414141 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4640
#2D4640
oklch(37.2% 0.033 177.7)
- #4F3940
#4F3940
oklch(37.2% 0.033 358)
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 #2D4640, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.027
- Charcoal #264653 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.034
- Dark Teal #014D4E ΔE 0.036
- Onyx #343A40 ΔE 0.041
- Dark Blue Green #005249 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.053
Use #2D4640 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.