#2B4E4A
Closest named color: Dark Slate Gray (#2F4F4F). oklch(39.6% 0.041 186.3), rgb(43, 78, 74).
Aa
White text reads best on this color (9.16:1).
About this color
#2B4E4A is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.041 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.010 away. White text reads best on it, at 9.16:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.29:1 |
| White text | 9.16:1 |
Values
| HEX | #2B4E4A |
| RGB | rgb(43, 78, 74) |
| HSL | hsl(173, 29%, 24%) |
| OKLCH | oklch(39.6% 0.041 186.3) |
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 #2B4E4A | 9.16:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #2B4E4A | 2.29:1 | Fails | Lc 12.9 | Not readable |
| #2B4E4A text on white | 9.16:1 | AAA | Lc 91.0 | Preferred for body text |
| #2B4E4A text on black | 2.29:1 | Fails | Lc -11.3 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ABC7C4
oklch(80.8% 0.03 188.7)
-
Step 400
400
#7DABA5
oklch(70.6% 0.05 186.1)
-
Step 500
500
#5A968F
oklch(63% 0.064 186.2)
-
Step 600
600
#3E8179
oklch(55.7% 0.07 185.2)
-
Step 700
700
#2F6D66
oklch(49.2% 0.065 185.4)
-
Step 800
800
#285853
oklch(42.5% 0.053 186.4)
-
Step 900
900 (this color)
#2B4E4A
oklch(39.6% 0.041 186.3)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#2B4E4A 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) | #4B4B4A | 0.044 |
| Deuteranopia (no green cones) | #45464A | 0.042 |
| Tritanopia (no blue cones) | #1D4F4D | 0.013 |
| Achromatopsia (no color) | #484848 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4E4A
#2B4E4A
oklch(39.6% 0.041 186.3)
- #5A3D43
#5A3D43
oklch(39.5% 0.042 5.5)
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 #2B4E4A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.010
- Dark Teal #014D4E ΔE 0.029
- Dark Blue Green #005249 ΔE 0.029
- Deep Teal #00555A ΔE 0.034
- Charcoal #264653 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.046
- Onyx #343A40 ΔE 0.063
Use #2B4E4A 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.