#2B505C
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.9% 0.047 221), rgb(43, 80, 92).
Aa
White text reads best on this color (8.73:1).
About this color
#2B505C is a dark, muted teal or cyan. In OKLCH its lightness is 41%, its chroma 0.047 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.021 away. White text reads best on it, at 8.73:1.
| Hue family | Teals and cyans |
| Lightness | dark (41%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #2B505C |
| RGB | rgb(43, 80, 92) |
| HSL | hsl(195, 36%, 26%) |
| OKLCH | oklch(40.9% 0.047 221) |
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 #2B505C | 8.73:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #2B505C | 2.40:1 | Fails | Lc 14.2 | Not readable |
| #2B505C text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #2B505C text on black | 2.40:1 | Fails | Lc -12.4 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDCE0
oklch(88.6% 0.015 218.1)
-
Step 300
300
#AEC5CD
oklch(80.9% 0.027 220.7)
-
Step 400
400
#83A7B4
oklch(70.6% 0.044 221.9)
-
Step 500
500
#6392A1
oklch(63.2% 0.055 219.9)
-
Step 600
600
#487C8D
oklch(55.7% 0.061 221)
-
Step 700
700
#396877
oklch(49% 0.057 220.7)
-
Step 800
800 (this color)
#2B505C
oklch(40.9% 0.047 221)
-
Step 900
900
#2B464F
oklch(37.6% 0.036 221)
-
Step 950
950
#1A292E
oklch(27% 0.022 220.6)
#2B505C 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) | #494E5D | 0.040 |
| Deuteranopia (no green cones) | #41495C | 0.034 |
| Tritanopia (no blue cones) | #105454 | 0.030 |
| Achromatopsia (no color) | #4B4B4B | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B505C
#2B505C
oklch(40.9% 0.047 221)
- #604236
#604236
oklch(40.9% 0.046 42.7)
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 #2B505C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.021
- Deep Teal #00555A ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.033
- Charcoal #264653 ΔE 0.034
- Dark Teal #014D4E ΔE 0.040
- Dark Blue Green #005249 ΔE 0.047
- Petrol #005F6A ΔE 0.048
- Charcoal Grey #3C4142 ΔE 0.055
Use #2B505C 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.