#306C80
Closest named color: Sea Blue (#047495). oklch(50% 0.069 222.8), rgb(48, 108, 128).
Aa
White text reads best on this color (5.86:1).
About this color
#306C80 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 50%, its chroma 0.069 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.037 away. White text reads best on it, at 5.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.58:1 |
| White text | 5.86:1 |
Values
| HEX | #306C80 |
| RGB | rgb(48, 108, 128) |
| HSL | hsl(195, 45%, 35%) |
| OKLCH | oklch(50% 0.069 222.8) |
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 #306C80 | 5.86:1 | AA | Lc -84.4 | Fine for body text |
| Black text on #306C80 | 3.58:1 | AA large text | Lc 24.9 | Dividers and decoration only |
| #306C80 text on white | 5.86:1 | AA | Lc 79.1 | Fine for body text |
| #306C80 text on black | 3.58:1 | AA large text | Lc -22.7 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7CA9B9
oklch(70.8% 0.054 221.9)
-
Step 500
500
#5893A8
oklch(63.1% 0.069 222.9)
-
Step 600
600
#3C7D93
oklch(55.6% 0.074 222.8)
-
Step 700
700 (this color)
#306C80
oklch(50% 0.069 222.8)
-
Step 800
800
#275666
oklch(42.7% 0.057 223)
-
Step 900
900
#254753
oklch(37.7% 0.045 223)
-
Step 950
950
#162A31
oklch(27.1% 0.029 222.4)
#306C80 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) | #606A81 | 0.055 |
| Deuteranopia (no green cones) | #556180 | 0.050 |
| Tritanopia (no blue cones) | #007272 | 0.040 |
| Achromatopsia (no color) | #656565 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306C80
#306C80
oklch(50% 0.069 222.8)
- #855643
#855643
oklch(50% 0.069 42.8)
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 #306C80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.037
- Denim #3B638C ΔE 0.039
- Slate #516572 ΔE 0.039
- Deep Turquoise #017374 ΔE 0.039
- Deep Aqua #08787F ΔE 0.040
- Dark Aquamarine #017371 ΔE 0.043
- Dark Aqua #05696B ΔE 0.044
- Ocean Blue #03719C ΔE 0.045
Use #306C80 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.