#2B4844
Closest named color: Dark Slate Gray (#2F4F4F). oklch(37.7% 0.036 184.8), rgb(43, 72, 68).
Aa
White text reads best on this color (9.93:1).
About this color
#2B4844 is a dark, muted teal or cyan. In OKLCH its lightness is 38%, its chroma 0.036 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.027 away. White text reads best on it, at 9.93:1.
| Hue family | Teals and cyans |
| Lightness | dark (38%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.11:1 |
| White text | 9.93:1 |
Values
| HEX | #2B4844 |
| RGB | rgb(43, 72, 68) |
| HSL | hsl(172, 25%, 23%) |
| OKLCH | oklch(37.7% 0.036 184.8) |
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 #2B4844 | 9.93:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #2B4844 | 2.11:1 | Fails | Lc 10.9 | Not readable |
| #2B4844 text on white | 9.93:1 | AAA | Lc 93.0 | Preferred for body text |
| #2B4844 text on black | 2.11:1 | Fails | Lc -9.5 | 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
#CFDCDA
oklch(88.4% 0.014 185.9)
-
Step 300
300
#AEC7C3
oklch(81% 0.028 185)
-
Step 400
400
#83AAA4
oklch(70.8% 0.043 184.7)
-
Step 500
500
#63958E
oklch(63.2% 0.055 184.9)
-
Step 600
600
#487F78
oklch(55.6% 0.06 185.2)
-
Step 700
700
#396B65
oklch(49.1% 0.055 185.6)
-
Step 800
800
#305752
oklch(42.6% 0.045 185.2)
-
Step 900
900 (this color)
#2B4844
oklch(37.7% 0.036 184.8)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#2B4844 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) | #454544 | 0.038 |
| Deuteranopia (no green cones) | #404144 | 0.036 |
| Tritanopia (no blue cones) | #214947 | 0.011 |
| Achromatopsia (no color) | #434343 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4844
#2B4844
oklch(37.7% 0.036 184.8)
- #523A3F
#523A3F
oklch(37.7% 0.035 5.1)
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 #2B4844, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.027
- Charcoal #264653 ΔE 0.029
- Charcoal Grey #3C4142 ΔE 0.030
- Dark Teal #014D4E ΔE 0.031
- Dark Blue Green #005249 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.043
- Onyx #343A40 ΔE 0.045
- Deep Teal #00555A ΔE 0.049
Use #2B4844 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.