#308FA3
Closest named color: Teal Blue (#01889F). oklch(60.4% 0.091 214.6), rgb(48, 143, 163).
Aa
Black text reads best on this color (5.58:1).
About this color
#308FA3 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 60%, its chroma 0.091 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.029 away. Black text reads best on it, at 5.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 5.58:1 |
| White text | 3.76:1 |
Values
| HEX | #308FA3 |
| RGB | rgb(48, 143, 163) |
| HSL | hsl(190, 55%, 41%) |
| OKLCH | oklch(60.4% 0.091 214.6) |
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 #308FA3 | 3.76:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #308FA3 | 5.58:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #308FA3 text on white | 3.76:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #308FA3 text on black | 5.58:1 | AA | Lc -36.8 | 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 500.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECEF
oklch(93.6% 0.012 215.8)
-
Step 200
200
#C8DEE3
oklch(88.6% 0.024 212.9)
-
Step 300
300
#A1C9D3
oklch(81% 0.045 214.7)
-
Step 400
400
#6AACBC
oklch(70.6% 0.071 214.9)
-
Step 500
500 (this color)
#308FA3
oklch(60.4% 0.091 214.6)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#104955
oklch(37.6% 0.059 215.3)
-
Step 950
950
#0D2B32
oklch(27% 0.037 215.6)
#308FA3 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) | #818AA4 | 0.082 |
| Deuteranopia (no green cones) | #717EA3 | 0.075 |
| Tritanopia (no blue cones) | #009795 | 0.040 |
| Achromatopsia (no color) | #848484 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #308FA3
#308FA3
oklch(60.4% 0.091 214.6)
- #B16D5C
#B16D5C
oklch(60.4% 0.091 34.8)
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 #308FA3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.029
- Teal Green #0A9396 ΔE 0.030
- Blue NCS #118AB2 ΔE 0.033
- Dark Cyan #008B8B ΔE 0.043
- Sea #3C9992 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.048
- Dusty Teal #4C9085 ΔE 0.049
- Off Blue #5684AE ΔE 0.050
Use #308FA3 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.