#306559
Closest named color: Dark Green Blue (#1F6357). oklch(46.6% 0.06 176.8), rgb(48, 101, 89).
Aa
White text reads best on this color (6.70:1).
About this color
#306559 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.060 and its hue 177°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.016 away. White text reads best on it, at 6.70:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.060) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.13:1 |
| White text | 6.70:1 |
Values
| HEX | #306559 |
| RGB | rgb(48, 101, 89) |
| HSL | hsl(166, 36%, 29%) |
| OKLCH | oklch(46.6% 0.06 176.8) |
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 #306559 | 6.70:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #306559 | 3.13:1 | AA large text | Lc 21.1 | Dividers and decoration only |
| #306559 text on white | 6.70:1 | AA | Lc 82.9 | Fine for body text |
| #306559 text on black | 3.13:1 | AA large text | Lc -19.0 | 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 700.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECEA
oklch(93.6% 0.009 179.6)
-
Step 200
200
#CFDDD9
oklch(88.6% 0.016 177)
-
Step 300
300
#AEC7C0
oklch(80.9% 0.029 176.9)
-
Step 400
400
#82ABA0
oklch(70.8% 0.047 176.6)
-
Step 500
500
#619689
oklch(63.2% 0.06 177.1)
-
Step 600
600
#468072
oklch(55.6% 0.065 176.4)
-
Step 700
700 (this color)
#306559
oklch(46.6% 0.06 176.8)
-
Step 800
800
#2E584E
oklch(42.6% 0.05 176.6)
-
Step 900
900
#2A4941
oklch(37.8% 0.04 175.8)
-
Step 950
950
#192A26
oklch(26.9% 0.024 178)
#306559 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) | #625F58 | 0.064 |
| Deuteranopia (no green cones) | #59595A | 0.061 |
| Tritanopia (no blue cones) | #186661 | 0.019 |
| Achromatopsia (no color) | #5C5C5C | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306559
#306559
oklch(46.6% 0.06 176.8)
- #754B5A
#754B5A
oklch(46.5% 0.061 356.7)
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 #306559, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.016
- Dark Aqua #05696B ΔE 0.032
- Petrol #005F6A ΔE 0.046
- Dark Aquamarine #017371 ΔE 0.048
- Deep Turquoise #017374 ΔE 0.051
- Pine #2B5D34 ΔE 0.056
- Slate #516572 ΔE 0.060
- Spruce #0A5F38 ΔE 0.060
Use #306559 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.