#306A5B
Closest named color: Dark Green Blue (#1F6357). oklch(48.1% 0.066 174.2), rgb(48, 106, 91).
Aa
White text reads best on this color (6.29:1).
About this color
#306A5B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.066 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Green Blue (#1F6357), ΔE 0.028 away. White text reads best on it, at 6.29:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #306A5B |
| RGB | rgb(48, 106, 91) |
| HSL | hsl(164, 38%, 30%) |
| OKLCH | oklch(48.1% 0.066 174.2) |
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 #306A5B | 6.29:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #306A5B | 3.33:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #306A5B text on white | 6.29:1 | AA | Lc 81.2 | Fine for body text |
| #306A5B text on black | 3.33:1 | AA large text | Lc -20.7 | 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
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CEDDD8
oklch(88.5% 0.017 174)
-
Step 300
300
#ACC8BF
oklch(80.9% 0.033 174.1)
-
Step 400
400
#80AB9E
oklch(70.6% 0.05 174.2)
-
Step 500
500
#5E9786
oklch(63.2% 0.066 173.2)
-
Step 600
600
#428170
oklch(55.6% 0.071 173.9)
-
Step 700
700 (this color)
#306A5B
oklch(48.1% 0.066 174.2)
-
Step 800
800
#2B594D
oklch(42.7% 0.055 174.5)
-
Step 900
900
#284940
oklch(37.7% 0.042 174.5)
-
Step 950
950
#182B25
oklch(27% 0.027 172.2)
#306A5B 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) | #67645A | 0.069 |
| Deuteranopia (no green cones) | #5E5D5C | 0.067 |
| Tritanopia (no blue cones) | #156B66 | 0.021 |
| Achromatopsia (no color) | #606060 | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306A5B
#306A5B
oklch(48.1% 0.066 174.2)
- #7B4E60
#7B4E60
oklch(48% 0.065 354.2)
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 #306A5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Green Blue #1F6357 ΔE 0.028
- Dark Aqua #05696B ΔE 0.033
- Dark Aquamarine #017371 ΔE 0.038
- Deep Turquoise #017374 ΔE 0.041
- Bluegreen #017A79 ΔE 0.056
- Petrol #005F6A ΔE 0.056
- Deep Aqua #08787F ΔE 0.059
- Slate #516572 ΔE 0.060
Use #306A5B 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.