#2B616B
Closest named color: Petrol (#005F6A). oklch(46% 0.059 211.4), rgb(43, 97, 107).
Aa
White text reads best on this color (6.94:1).
About this color
#2B616B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.059 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.024 away. White text reads best on it, at 6.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.02:1 |
| White text | 6.94:1 |
Values
| HEX | #2B616B |
| RGB | rgb(43, 97, 107) |
| HSL | hsl(189, 43%, 29%) |
| OKLCH | oklch(46% 0.059 211.4) |
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 #2B616B | 6.94:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #2B616B | 3.02:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #2B616B text on white | 6.94:1 | AA | Lc 83.9 | Fine for body text |
| #2B616B text on black | 3.02:1 | AA large text | Lc -18.1 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CEDCDF
oklch(88.5% 0.016 212)
-
Step 300
300
#ACC6CB
oklch(80.9% 0.029 210.5)
-
Step 400
400
#80A9B1
oklch(70.8% 0.046 210.9)
-
Step 500
500
#5E939E
oklch(63% 0.059 212.2)
-
Step 600
600
#437D89
oklch(55.5% 0.063 212.6)
-
Step 700
700 (this color)
#2B616B
oklch(46% 0.059 211.4)
-
Step 800
800
#2C565E
oklch(42.6% 0.049 211.4)
-
Step 900
900
#28474D
oklch(37.6% 0.038 211.3)
-
Step 950
950
#182A2D
oklch(27.1% 0.024 209.1)
#2B616B 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) | #595E6C | 0.056 |
| Deuteranopia (no green cones) | #4F566B | 0.051 |
| Tritanopia (no blue cones) | #006564 | 0.029 |
| Achromatopsia (no color) | #5A5A5A | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B616B
#2B616B
oklch(46% 0.059 211.4)
- #764C44
#764C44
oklch(46.2% 0.059 31.3)
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 #2B616B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.024
- Dark Aqua #05696B ΔE 0.029
- Dark Green Blue #1F6357 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.041
- Slate #516572 ΔE 0.048
- Deep Teal #00555A ΔE 0.053
- Deep Turquoise #017374 ΔE 0.054
- Dark Aquamarine #017371 ΔE 0.055
Use #2B616B 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.