#307A66
Closest named color: Bluegreen (#017A79). oklch(52.7% 0.08 172.5), rgb(48, 122, 102).
Aa
White text reads best on this color (5.12:1).
About this color
#307A66 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.080 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.033 away. White text reads best on it, at 5.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.10:1 |
| White text | 5.12:1 |
Values
| HEX | #307A66 |
| RGB | rgb(48, 122, 102) |
| HSL | hsl(164, 44%, 33%) |
| OKLCH | oklch(52.7% 0.08 172.5) |
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 #307A66 | 5.12:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #307A66 | 4.10:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #307A66 text on white | 5.12:1 | AA | Lc 75.1 | Fine for body text |
| #307A66 text on black | 4.10:1 | AA large text | Lc -26.6 | 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 600.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED8
oklch(88.6% 0.02 172.7)
-
Step 300
300
#AAC9BE
oklch(81% 0.037 171.9)
-
Step 400
400
#7BAD9D
oklch(70.7% 0.058 172.7)
-
Step 500
500
#579885
oklch(63% 0.073 173)
-
Step 600
600 (this color)
#307A66
oklch(52.7% 0.08 172.5)
-
Step 700
700
#2B6E5C
oklch(49% 0.074 172.6)
-
Step 800
800
#255A4B
oklch(42.7% 0.062 172.1)
-
Step 900
900
#244A3F
oklch(37.7% 0.048 172.7)
-
Step 950
950
#162B25
oklch(26.9% 0.03 173.8)
#307A66 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) | #767265 | 0.083 |
| Deuteranopia (no green cones) | #6B6A67 | 0.080 |
| Tritanopia (no blue cones) | #007B74 | 0.026 |
| Achromatopsia (no color) | #6E6E6E | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307A66
#307A66
oklch(52.7% 0.08 172.5)
- #8F576F
#8F576F
oklch(52.7% 0.08 353)
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 #307A66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.033
- Dark Aquamarine #017371 ΔE 0.039
- Teal #008080 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.041
- Deep Aqua #08787F ΔE 0.044
- Dark Sage #598556 ΔE 0.062
- Dark Cyan #008B8B ΔE 0.063
- Sea Green #2E8B57 ΔE 0.064
Use #307A66 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.