#305F60
Closest named color: Dark Green Blue (#1F6357). oklch(45.3% 0.051 197.3), rgb(48, 95, 96).
Aa
White text reads best on this color (7.16:1).
About this color
#305F60 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 45%, its chroma 0.051 and its hue 197°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.027 away. White text reads best on it, at 7.16:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #305F60 |
| RGB | rgb(48, 95, 96) |
| HSL | hsl(181, 33%, 28%) |
| OKLCH | oklch(45.3% 0.051 197.3) |
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 #305F60 | 7.16:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #305F60 | 2.93:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #305F60 text on white | 7.16:1 | AAA | Lc 84.7 | Fine for body text |
| #305F60 text on black | 2.93:1 | Fails | Lc -17.3 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CDDDDD
oklch(88.6% 0.017 196.8)
-
Step 300
300
#ABC7C7
oklch(80.9% 0.03 196.6)
-
Step 400
400
#7DAAAB
oklch(70.6% 0.048 197.8)
-
Step 500
500
#5B9596
oklch(63.1% 0.061 197.1)
-
Step 600
600
#3E7F81
oklch(55.5% 0.066 198.1)
-
Step 700
700
#2F6C6D
oklch(49.2% 0.063 196.8)
-
Step 800
800 (this color)
#305F60
oklch(45.3% 0.051 197.3)
-
Step 900
900
#264849
oklch(37.6% 0.04 198.1)
-
Step 950
950
#172A2B
oklch(26.9% 0.025 200)
#305F60 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) | #595B60 | 0.053 |
| Deuteranopia (no green cones) | #515560 | 0.049 |
| Tritanopia (no blue cones) | #15625F | 0.021 |
| Achromatopsia (no color) | #585858 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305F60
#305F60
oklch(45.3% 0.051 197.3)
- #704A4C
#704A4C
oklch(45.2% 0.052 15.9)
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 #305F60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.027
- Petrol #005F6A ΔE 0.029
- Dark Aqua #05696B ΔE 0.034
- Deep Teal #00555A ΔE 0.048
- YInMn Blue #415A77 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.052
- Slate #516572 ΔE 0.054
- Dark Aquamarine #017371 ΔE 0.061
Use #305F60 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.