#306A5E
Closest named color: Dark Green Blue (#1F6357). oklch(48.2% 0.064 178), rgb(48, 106, 94).
Aa
White text reads best on this color (6.27:1).
About this color
#306A5E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.064 and its hue 178°. 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 6.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dark Green Blue (#1F6357) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #306A5E |
| RGB | rgb(48, 106, 94) |
| HSL | hsl(168, 38%, 30%) |
| OKLCH | oklch(48.2% 0.064 178) |
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 #306A5E | 6.27:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #306A5E | 3.34:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #306A5E text on white | 6.27:1 | AA | Lc 81.1 | Fine for body text |
| #306A5E text on black | 3.34:1 | AA large text | Lc -20.8 | 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
#CEDDD9
oklch(88.5% 0.017 178.2)
-
Step 300
300
#ACC8C0
oklch(81% 0.032 176.4)
-
Step 400
400
#7FABA0
oklch(70.6% 0.05 177.7)
-
Step 500
500
#5D9689
oklch(63% 0.063 178)
-
Step 600
600
#428173
oklch(55.7% 0.069 177.4)
-
Step 700
700 (this color)
#306A5E
oklch(48.2% 0.064 178)
-
Step 800
800
#2B594F
oklch(42.8% 0.054 177.7)
-
Step 900
900
#284942
oklch(37.8% 0.041 178.8)
-
Step 950
950
#182B26
oklch(27.1% 0.027 175.7)
#306A5E 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) | #66645E | 0.068 |
| Deuteranopia (no green cones) | #5D5D5F | 0.065 |
| Tritanopia (no blue cones) | #126B66 | 0.020 |
| Achromatopsia (no color) | #606060 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306A5E
#306A5E
oklch(48.2% 0.064 178)
- #7C4F5E
#7C4F5E
oklch(48.3% 0.064 358.2)
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 #306A5E, 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 0.029
- Dark Aquamarine #017371 ΔE 0.035
- Deep Turquoise #017374 ΔE 0.038
- Bluegreen #017A79 ΔE 0.054
- Petrol #005F6A ΔE 0.054
- Deep Aqua #08787F ΔE 0.056
- Slate #516572 ΔE 0.057
Use #306A5E 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.