#304B44
Closest named color: Dark Slate Gray (#2F4F4F). oklch(38.9% 0.035 176.3), rgb(48, 75, 68).
Aa
White text reads best on this color (9.47:1).
About this color
#304B44 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.035 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.019 away. White text reads best on it, at 9.47:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.035) |
| Temperature | cool |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #304B44 |
| RGB | rgb(48, 75, 68) |
| HSL | hsl(164, 22%, 24%) |
| OKLCH | oklch(38.9% 0.035 176.3) |
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 #304B44 | 9.47:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #304B44 | 2.21:1 | Fails | Lc 12.1 | Not readable |
| #304B44 text on white | 9.47:1 | AAA | Lc 91.9 | Preferred for body text |
| #304B44 text on black | 2.21:1 | Fails | Lc -10.5 | 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 900.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5ECEA
oklch(93.7% 0.008 177.3)
-
Step 200
200
#D0DCD9
oklch(88.5% 0.014 179.4)
-
Step 300
300
#B0C6C0
oklch(80.8% 0.025 177.5)
-
Step 400
400
#86AAA0
oklch(70.8% 0.042 176.2)
-
Step 500
500
#669488
oklch(63% 0.053 176.4)
-
Step 600
600
#4C7F72
oklch(55.6% 0.059 176)
-
Step 700
700
#3D6B60
oklch(49.1% 0.054 176.9)
-
Step 800
800
#33574E
oklch(42.7% 0.044 176.4)
-
Step 900
900 (this color)
#304B44
oklch(38.9% 0.035 176.3)
-
Step 950
950
#1B2A26
oklch(27% 0.022 176.2)
#304B44 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) | #494844 | 0.037 |
| Deuteranopia (no green cones) | #444445 | 0.036 |
| Tritanopia (no blue cones) | #284C49 | 0.011 |
| Achromatopsia (no color) | #464646 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304B44
#304B44
oklch(38.9% 0.035 176.3)
- #543D45
#543D45
oklch(38.8% 0.034 356.1)
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 #304B44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.019
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Teal #014D4E ΔE 0.035
- Dark Blue Green #005249 ΔE 0.036
- Charcoal #264653 ΔE 0.037
- Deep Teal #00555A ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.048
- Onyx #343A40 ΔE 0.055
Use #304B44 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.