#307A78
Closest named color: Bluegreen (#017A79). oklch(53.3% 0.073 192.7), rgb(48, 122, 120).
Aa
White text reads best on this color (5.02:1).
About this color
#307A78 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.073 and its hue 193°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.019 away. White text reads best on it, at 5.02:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.18:1 |
| White text | 5.02:1 |
Values
| HEX | #307A78 |
| RGB | rgb(48, 122, 120) |
| HSL | hsl(178, 44%, 33%) |
| OKLCH | oklch(53.3% 0.073 192.7) |
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 #307A78 | 5.02:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #307A78 | 4.18:1 | AA large text | Lc 29.6 | Dividers and decoration only |
| #307A78 text on white | 5.02:1 | AA | Lc 74.5 | Content text, not long reading |
| #307A78 text on black | 4.18:1 | AA large text | Lc -27.2 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CCDDDC
oklch(88.4% 0.018 192.6)
-
Step 300
300
#A9C8C6
oklch(80.9% 0.033 191.7)
-
Step 400
400
#7AABA9
oklch(70.6% 0.052 192.9)
-
Step 500
500
#569794
oklch(63.2% 0.067 191.8)
-
Step 600
600 (this color)
#307A78
oklch(53.3% 0.073 192.7)
-
Step 700
700
#296D6B
oklch(49.2% 0.068 192.5)
-
Step 800
800
#245957
oklch(42.8% 0.056 191.9)
-
Step 900
900
#234948
oklch(37.7% 0.043 193.2)
-
Step 950
950
#152B2A
oklch(27% 0.028 191.9)
#307A78 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) | #737478 | 0.077 |
| Deuteranopia (no green cones) | #676B79 | 0.072 |
| Tritanopia (no blue cones) | #007D79 | 0.019 |
| Achromatopsia (no color) | #6F6F6F | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #307A78
#307A78
oklch(53.3% 0.073 192.7)
- #925B61
#925B61
oklch(53.4% 0.073 12.7)
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 #307A78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.019
- Deep Aqua #08787F ΔE 0.022
- Teal #008080 ΔE 0.023
- Deep Turquoise #017374 ΔE 0.033
- Dark Aquamarine #017371 ΔE 0.034
- Ocean #017B92 ΔE 0.042
- Dark Cyan #008B8B ΔE 0.051
- Metallic Blue #4F738E ΔE 0.056
Use #307A78 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.