#2B6463
Closest named color: Dark Aqua (#05696B). oklch(46.5% 0.059 193.7), rgb(43, 100, 99).
Aa
White text reads best on this color (6.76:1).
About this color
#2B6463 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.059 and its hue 194°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.022 away. White text reads best on it, at 6.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.10:1 |
| White text | 6.76:1 |
Values
| HEX | #2B6463 |
| RGB | rgb(43, 100, 99) |
| HSL | hsl(179, 40%, 28%) |
| OKLCH | oklch(46.5% 0.059 193.7) |
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 #2B6463 | 6.76:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #2B6463 | 3.10:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #2B6463 text on white | 6.76:1 | AA | Lc 83.1 | Fine for body text |
| #2B6463 text on black | 3.10:1 | AA large text | Lc -18.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDC
oklch(88.6% 0.016 192)
-
Step 300
300
#ACC7C6
oklch(80.9% 0.029 193.9)
-
Step 400
400
#7FAAA9
oklch(70.7% 0.046 194.4)
-
Step 500
500
#5D9594
oklch(63.1% 0.059 194.3)
-
Step 600
600
#427F7E
oklch(55.5% 0.063 194.1)
-
Step 700
700 (this color)
#2B6463
oklch(46.5% 0.059 193.7)
-
Step 800
800
#2B5857
oklch(42.8% 0.05 193.6)
-
Step 900
900
#284847
oklch(37.7% 0.038 193.1)
-
Step 950
950
#182A2A
oklch(26.9% 0.024 195.8)
#2B6463 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) | #5E5F63 | 0.062 |
| Deuteranopia (no green cones) | #555863 | 0.059 |
| Tritanopia (no blue cones) | #006764 | 0.021 |
| Achromatopsia (no color) | #5B5B5B | 0.060 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B6463
#2B6463
oklch(46.5% 0.059 193.7)
- #774C4F
#774C4F
oklch(46.6% 0.059 15)
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 #2B6463, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.022
- Dark Green Blue #1F6357 ΔE 0.023
- Petrol #005F6A ΔE 0.032
- Dark Aquamarine #017371 ΔE 0.046
- Deep Turquoise #017374 ΔE 0.046
- Slate #516572 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.057
- Deep Teal #00555A ΔE 0.058
Use #2B6463 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.