#305B50
Closest named color: Dark Green Blue (#1F6357). oklch(43.6% 0.052 175.3), rgb(48, 91, 80).
Aa
White text reads best on this color (7.66:1).
About this color
#305B50 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.052 and its hue 175°. 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 7.66:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 2.73:1 |
| White text | 7.66:1 |
Values
| HEX | #305B50 |
| RGB | rgb(48, 91, 80) |
| HSL | hsl(165, 31%, 27%) |
| OKLCH | oklch(43.6% 0.052 175.3) |
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 #305B50 | 7.66:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #305B50 | 2.73:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #305B50 text on white | 7.66:1 | AAA | Lc 86.5 | Fine for body text |
| #305B50 text on black | 2.73:1 | Fails | Lc -15.5 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ADC7BF
oklch(80.8% 0.03 175)
-
Step 400
400
#81AB9F
oklch(70.7% 0.049 175.4)
-
Step 500
500
#609687
oklch(63.1% 0.062 174.8)
-
Step 600
600
#458071
oklch(55.5% 0.067 175.4)
-
Step 700
700
#366C5F
oklch(49% 0.062 176)
-
Step 800
800 (this color)
#305B50
oklch(43.6% 0.052 175.3)
-
Step 900
900
#294940
oklch(37.8% 0.041 174.1)
-
Step 950
950
#192B26
oklch(27.2% 0.026 174.9)
#305B50 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) | #585650 | 0.054 |
| Deuteranopia (no green cones) | #515151 | 0.052 |
| Tritanopia (no blue cones) | #205C58 | 0.017 |
| Achromatopsia (no color) | #535353 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305B50
#305B50
oklch(43.6% 0.052 175.3)
- #694653
#694653
oklch(43.8% 0.051 355.5)
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 #305B50, 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
- Dark Slate Gray #2F4F4F ΔE 0.040
- Deep Teal #00555A ΔE 0.043
- Petrol #005F6A ΔE 0.044
- Pine #2B5D34 ΔE 0.047
- Dark Blue Green #005249 ΔE 0.047
- Dark Aqua #05696B ΔE 0.052
- Spruce #0A5F38 ΔE 0.053
Use #305B50 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.