#305D5B
Closest named color: Dark Green Blue (#1F6357). oklch(44.6% 0.05 191.8), rgb(48, 93, 91).
Aa
White text reads best on this color (7.38:1).
About this color
#305D5B is a dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.050 and its hue 192°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.026 away. White text reads best on it, at 7.38:1.
| Hue family | Teals and cyans |
| Lightness | dark (45%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #305D5B |
| RGB | rgb(48, 93, 91) |
| HSL | hsl(177, 32%, 28%) |
| OKLCH | oklch(44.6% 0.05 191.8) |
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 #305D5B | 7.38:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #305D5B | 2.84:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #305D5B text on white | 7.38:1 | AAA | Lc 85.6 | Fine for body text |
| #305D5B text on black | 2.84:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDC
oklch(88.6% 0.016 192)
-
Step 300
300
#ACC7C5
oklch(80.9% 0.029 191.1)
-
Step 400
400
#7FAAA8
oklch(70.6% 0.046 192.6)
-
Step 500
500
#5D9592
oklch(63% 0.059 191.4)
-
Step 600
600
#41807D
oklch(55.7% 0.065 191.4)
-
Step 700
700
#326C69
oklch(49.2% 0.061 190.9)
-
Step 800
800 (this color)
#305D5B
oklch(44.6% 0.05 191.8)
-
Step 900
900
#274847
oklch(37.6% 0.039 193.1)
-
Step 950
950
#182A29
oklch(26.9% 0.024 191.4)
#305D5B 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) | #58595B | 0.052 |
| Deuteranopia (no green cones) | #50535B | 0.049 |
| Tritanopia (no blue cones) | #195F5C | 0.018 |
| Achromatopsia (no color) | #565656 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305D5B
#305D5B
oklch(44.6% 0.05 191.8)
- #6D494D
#6D494D
oklch(44.7% 0.05 11.9)
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 #305D5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.026
- Petrol #005F6A ΔE 0.032
- Dark Aqua #05696B ΔE 0.041
- Deep Teal #00555A ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.044
- YInMn Blue #415A77 ΔE 0.056
- Dark Blue Green #005249 ΔE 0.057
- Slate #516572 ΔE 0.061
Use #305D5B 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.