#2B4945
Closest named color: Dark Slate Gray (#2F4F4F). oklch(38% 0.037 185.1), rgb(43, 73, 69).
Aa
White text reads best on this color (9.80:1).
About this color
#2B4945 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.037 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.024 away. White text reads best on it, at 9.80:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.14:1 |
| White text | 9.80:1 |
Values
| HEX | #2B4945 |
| RGB | rgb(43, 73, 69) |
| HSL | hsl(172, 26%, 23%) |
| OKLCH | oklch(38% 0.037 185.1) |
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 #2B4945 | 9.80:1 | AAA | Lc -96.9 | Preferred for body text |
| Black text on #2B4945 | 2.14:1 | Fails | Lc 11.3 | Not readable |
| #2B4945 text on white | 9.80:1 | AAA | Lc 92.7 | Preferred for body text |
| #2B4945 text on black | 2.14:1 | Fails | Lc -9.8 | 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
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CFDDDA
oklch(88.6% 0.016 181.7)
-
Step 300
300
#AEC7C3
oklch(81% 0.028 185)
-
Step 400
400
#82AAA4
oklch(70.7% 0.044 184.9)
-
Step 500
500
#61958E
oklch(63.1% 0.057 185.2)
-
Step 600
600
#477F78
oklch(55.6% 0.061 185.3)
-
Step 700
700
#386B65
oklch(49% 0.056 185.7)
-
Step 800
800
#2F5852
oklch(42.8% 0.047 183.6)
-
Step 900
900 (this color)
#2B4945
oklch(38% 0.037 185.1)
-
Step 950
950
#192A28
oklch(26.9% 0.023 186.7)
#2B4945 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) | #464645 | 0.039 |
| Deuteranopia (no green cones) | #414245 | 0.037 |
| Tritanopia (no blue cones) | #204A48 | 0.011 |
| Achromatopsia (no color) | #444444 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4945
#2B4945
oklch(38% 0.037 185.1)
- #543A40
#543A40
oklch(38% 0.038 3.8)
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 #2B4945, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.024
- Charcoal #264653 ΔE 0.029
- Dark Teal #014D4E ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.032
- Dark Blue Green #005249 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.043
- Deep Teal #00555A ΔE 0.046
- Onyx #343A40 ΔE 0.048
Use #2B4945 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.