#308B73
Closest named color: Viridian (#1E9167). oklch(57.6% 0.093 172.2), rgb(48, 139, 115).
Aa
Black text reads best on this color (5.06:1).
About this color
#308B73 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.093 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Viridian (#1E9167), ΔE 0.031 away. Black text reads best on it, at 5.06:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Viridian (#1E9167) |
| Black text | 5.06:1 |
| White text | 4.14:1 |
Values
| HEX | #308B73 |
| RGB | rgb(48, 139, 115) |
| HSL | hsl(164, 49%, 37%) |
| OKLCH | oklch(57.6% 0.093 172.2) |
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 #308B73 | 4.14:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #308B73 | 5.06:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #308B73 text on white | 4.14:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #308B73 text on black | 5.06:1 | AA | Lc -33.4 | Non-text elements, placeholder text |
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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E2EDE9
oklch(93.7% 0.013 172.4)
-
Step 200
200
#CBDED7
oklch(88.4% 0.022 171.7)
-
Step 300
300
#A6CABD
oklch(80.9% 0.043 171.3)
-
Step 400
400
#74AF9C
oklch(70.8% 0.068 172.1)
-
Step 500
500
#4C9A84
oklch(63% 0.085 172.8)
-
Step 600
600 (this color)
#308B73
oklch(57.6% 0.093 172.2)
-
Step 700
700
#19705B
oklch(49% 0.086 172.4)
-
Step 800
800
#195C4B
oklch(42.8% 0.072 172.3)
-
Step 900
900
#1C4B3E
oklch(37.6% 0.056 172.2)
-
Step 950
950
#122C24
oklch(27% 0.036 171.2)
#308B73 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) | #878272 | 0.097 |
| Deuteranopia (no green cones) | #7A7975 | 0.092 |
| Tritanopia (no blue cones) | #008C84 | 0.027 |
| Achromatopsia (no color) | #7D7D7D | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #308B73
#308B73
oklch(57.6% 0.093 172.2)
- #A3617F
#A3617F
oklch(57.5% 0.093 351.7)
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 #308B73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Viridian #1E9167 ΔE 0.031
- Dark Cyan #008B8B ΔE 0.038
- Dusty Teal #4C9085 ΔE 0.039
- Sea Green #2E8B57 ΔE 0.041
- Ocean Green #3D9973 ΔE 0.045
- Dark Sage #598556 ΔE 0.046
- Teal #008080 ΔE 0.049
- Slate Green #658D6D ΔE 0.050
Use #308B73 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.