#2B504D
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.3% 0.043 188.9), rgb(43, 80, 77).
Aa
White text reads best on this color (8.90:1).
About this color
#2B504D is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.043 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.007 away. White text reads best on it, at 8.90:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #2B504D |
| RGB | rgb(43, 80, 77) |
| HSL | hsl(175, 30%, 24%) |
| OKLCH | oklch(40.3% 0.043 188.9) |
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 #2B504D | 8.90:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #2B504D | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #2B504D text on white | 8.90:1 | AAA | Lc 90.3 | Preferred for body text |
| #2B504D text on black | 2.35:1 | Fails | Lc -12.0 | 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#CFDCDB
oklch(88.4% 0.014 191.4)
-
Step 300
300
#AFC6C4
oklch(80.9% 0.025 190.3)
-
Step 400
400
#85A9A5
oklch(70.7% 0.04 187.9)
-
Step 500
500
#659490
oklch(63.2% 0.051 189.3)
-
Step 600
600
#4B7E7A
oklch(55.6% 0.055 189.3)
-
Step 700
700
#3C6A67
oklch(49% 0.051 190.3)
-
Step 800
800 (this color)
#2B504D
oklch(40.3% 0.043 188.9)
-
Step 900
900
#2C4745
oklch(37.6% 0.033 189.9)
-
Step 950
950
#1A2A28
oklch(27% 0.022 186.2)
#2B504D 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) | #4C4C4D | 0.045 |
| Deuteranopia (no green cones) | #46484D | 0.042 |
| Tritanopia (no blue cones) | #1B524F | 0.014 |
| Achromatopsia (no color) | #4A4A4A | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B504D
#2B504D
oklch(40.3% 0.043 188.9)
- #5D3F43
#5D3F43
oklch(40.3% 0.042 10.3)
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 #2B504D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.007
- Dark Blue Green #005249 ΔE 0.030
- Deep Teal #00555A ΔE 0.030
- Dark Teal #014D4E ΔE 0.031
- Charcoal #264653 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.048
- Petrol #005F6A ΔE 0.057
Use #2B504D 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.