#2A504E
Closest named color: Dark Slate Gray (#2F4F4F). oklch(40.2% 0.044 191.2), rgb(42, 80, 78).
Aa
White text reads best on this color (8.91:1).
About this color
#2A504E is a dark, muted teal or cyan. In OKLCH its lightness is 40%, its chroma 0.044 and its hue 191°. 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 8.91:1.
| Hue family | Teals and cyans |
| Lightness | dark (40%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.35:1 |
| White text | 8.91:1 |
Values
| HEX | #2A504E |
| RGB | rgb(42, 80, 78) |
| HSL | hsl(177, 31%, 24%) |
| OKLCH | oklch(40.2% 0.044 191.2) |
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 #2A504E | 8.91:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #2A504E | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #2A504E text on white | 8.91:1 | AAA | Lc 90.3 | Preferred for body text |
| #2A504E 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
#84A9A7
oklch(70.7% 0.04 192.2)
-
Step 500
500
#649491
oklch(63.1% 0.052 191)
-
Step 600
600
#497E7B
oklch(55.5% 0.057 191)
-
Step 700
700
#3A6A68
oklch(49% 0.053 192.1)
-
Step 800
800 (this color)
#2A504E
oklch(40.2% 0.044 191.2)
-
Step 900
900
#2B4846
oklch(37.8% 0.035 190.2)
-
Step 950
950
#1A2A29
oklch(27% 0.022 191)
#2A504E 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) | #4C4D4E | 0.046 |
| Deuteranopia (no green cones) | #45484E | 0.042 |
| Tritanopia (no blue cones) | #18524F | 0.015 |
| Achromatopsia (no color) | #4A4A4A | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A504E
#2A504E
oklch(40.2% 0.044 191.2)
- #5D3F42
#5D3F42
oklch(40.3% 0.042 12.5)
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 #2A504E, 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
- Deep Teal #00555A ΔE 0.029
- Dark Blue Green #005249 ΔE 0.029
- Dark Teal #014D4E ΔE 0.030
- Charcoal #264653 ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.049
- Petrol #005F6A ΔE 0.056
Use #2A504E 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.