#2B4E43
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.4% 0.045 171.7), rgb(43, 78, 67).
Aa
White text reads best on this color (9.23:1).
About this color
#2B4E43 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.045 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.021 away. White text reads best on it, at 9.23:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.27:1 |
| White text | 9.23:1 |
Values
| HEX | #2B4E43 |
| RGB | rgb(43, 78, 67) |
| HSL | hsl(161, 29%, 24%) |
| OKLCH | oklch(39.4% 0.045 171.7) |
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 #2B4E43 | 9.23:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #2B4E43 | 2.27:1 | Fails | Lc 12.7 | Not readable |
| #2B4E43 text on white | 9.23:1 | AAA | Lc 91.2 | Preferred for body text |
| #2B4E43 text on black | 2.27:1 | Fails | Lc -11.1 | 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
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CDDDD7
oklch(88.4% 0.019 171.4)
-
Step 300
300
#ACC8BE
oklch(80.9% 0.033 171.9)
-
Step 400
400
#7EAC9C
oklch(70.7% 0.055 171.2)
-
Step 500
500
#5C9784
oklch(63% 0.069 171.5)
-
Step 600
600
#3F826E
oklch(55.7% 0.076 171.6)
-
Step 700
700
#316E5C
oklch(49.2% 0.07 171.5)
-
Step 800
800
#29594B
oklch(42.6% 0.058 172.1)
-
Step 900
900 (this color)
#2B4E43
oklch(39.4% 0.045 171.7)
-
Step 950
950
#172B25
oklch(27% 0.028 173)
#2B4E43 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) | #4C4A42 | 0.046 |
| Deuteranopia (no green cones) | #464644 | 0.044 |
| Tritanopia (no blue cones) | #204F4B | 0.015 |
| Achromatopsia (no color) | #474747 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4E43
#2B4E43
oklch(39.4% 0.045 171.7)
- #593C49
#593C49
oklch(39.4% 0.045 350.9)
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 #2B4E43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.021
- Dark Blue Green #005249 ΔE 0.027
- Dark Teal #014D4E ΔE 0.033
- Deep Teal #00555A ΔE 0.041
- Charcoal #264653 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.056
- Evergreen #05472A ΔE 0.056
Use #2B4E43 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.