#2D4F52
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.3% 0.04 202.9), rgb(45, 79, 82).
Aa
White text reads best on this color (8.92:1).
About this color
#2D4F52 is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.040 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.005 away. White text reads best on it, at 8.92:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #2D4F52 |
| RGB | rgb(45, 79, 82) |
| HSL | hsl(185, 29%, 25%) |
| OKLCH | oklch(40.3% 0.04 202.9) |
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 #2D4F52 | 8.92:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #2D4F52 | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #2D4F52 text on white | 8.92:1 | AAA | Lc 90.4 | Preferred for body text |
| #2D4F52 text on black | 2.35:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D0DCDD
oklch(88.6% 0.013 202.9)
-
Step 300
300
#B0C5C7
oklch(80.8% 0.023 203.7)
-
Step 400
400
#86A8AB
oklch(70.7% 0.037 203)
-
Step 500
500
#679296
oklch(63% 0.047 203.3)
-
Step 600
600
#4D7D81
oklch(55.7% 0.052 202.5)
-
Step 700
700
#3E696D
oklch(49.1% 0.048 203.3)
-
Step 800
800 (this color)
#2D4F52
oklch(40.3% 0.04 202.9)
-
Step 900
900
#2D4749
oklch(37.8% 0.032 202)
-
Step 950
950
#1B292B
oklch(26.9% 0.019 207.1)
#2D4F52 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) | #4A4C52 | 0.040 |
| Deuteranopia (no green cones) | #444852 | 0.036 |
| Tritanopia (no blue cones) | #1C5150 | 0.018 |
| Achromatopsia (no color) | #4A4A4A | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2D4F52
#2D4F52
oklch(40.3% 0.04 202.9)
- #5C403E
#5C403E
oklch(40.2% 0.04 23.6)
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 #2D4F52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.005
- Deep Teal #00555A ΔE 0.030
- Charcoal #264653 ΔE 0.033
- Dark Teal #014D4E ΔE 0.033
- Dark Blue Green #005249 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.038
- Charcoal Grey #3C4142 ΔE 0.046
- Petrol #005F6A ΔE 0.055
Use #2D4F52 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.