#2B4A42
Closest named color: Dark Slate Gray (#2F4F4F). oklch(38.2% 0.04 175.9), rgb(43, 74, 66).
Aa
White text reads best on this color (9.71:1).
About this color
#2B4A42 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.040 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.025 away. White text reads best on it, at 9.71:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.16:1 |
| White text | 9.71:1 |
Values
| HEX | #2B4A42 |
| RGB | rgb(43, 74, 66) |
| HSL | hsl(165, 26%, 23%) |
| OKLCH | oklch(38.2% 0.04 175.9) |
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 #2B4A42 | 9.71:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #2B4A42 | 2.16:1 | Fails | Lc 11.5 | Not readable |
| #2B4A42 text on white | 9.71:1 | AAA | Lc 92.5 | Preferred for body text |
| #2B4A42 text on black | 2.16:1 | Fails | Lc -10.0 | 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
#CFDDD8
oklch(88.6% 0.016 172.6)
-
Step 300
300
#AEC7C0
oklch(80.9% 0.029 176.9)
-
Step 400
400
#82AB9F
oklch(70.8% 0.048 175)
-
Step 500
500
#619688
oklch(63.2% 0.061 175.8)
-
Step 600
600
#468072
oklch(55.6% 0.065 176.4)
-
Step 700
700
#376C5F
oklch(49% 0.061 175.8)
-
Step 800
800
#2E584E
oklch(42.6% 0.05 176.6)
-
Step 900
900 (this color)
#2B4A42
oklch(38.2% 0.04 175.9)
-
Step 950
950
#192B26
oklch(27.2% 0.026 174.9)
#2B4A42 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) | #484642 | 0.042 |
| Deuteranopia (no green cones) | #434343 | 0.040 |
| Tritanopia (no blue cones) | #214B48 | 0.013 |
| Achromatopsia (no color) | #444444 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4A42
#2B4A42
oklch(38.2% 0.04 175.9)
- #543A44
#543A44
oklch(38.1% 0.04 354.3)
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 #2B4A42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.025
- Dark Teal #014D4E ΔE 0.031
- Dark Blue Green #005249 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.036
- Charcoal #264653 ΔE 0.036
- Deep Teal #00555A ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.049
- Onyx #343A40 ΔE 0.053
Use #2B4A42 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.