#306378
Closest named color: YInMn Blue (#415A77). oklch(47.4% 0.064 227.4), rgb(48, 99, 120).
Aa
White text reads best on this color (6.60:1).
About this color
#306378 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.064 and its hue 227°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.031 away. White text reads best on it, at 6.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.18:1 |
| White text | 6.60:1 |
Values
| HEX | #306378 |
| RGB | rgb(48, 99, 120) |
| HSL | hsl(197, 43%, 33%) |
| OKLCH | oklch(47.4% 0.064 227.4) |
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 #306378 | 6.60:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #306378 | 3.18:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #306378 text on white | 6.60:1 | AA | Lc 82.5 | Fine for body text |
| #306378 text on black | 3.18:1 | AA large text | Lc -19.4 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDCE2
oklch(88.6% 0.017 225.2)
-
Step 300
300
#ADC5D0
oklch(80.9% 0.03 227.1)
-
Step 400
400
#80A7B9
oklch(70.6% 0.05 227.9)
-
Step 500
500
#5F92A8
oklch(63.2% 0.064 227.1)
-
Step 600
600
#447C93
oklch(55.7% 0.069 226.8)
-
Step 700
700 (this color)
#306378
oklch(47.4% 0.064 227.4)
-
Step 800
800
#2D5566
oklch(42.8% 0.053 227.6)
-
Step 900
900
#294653
oklch(37.7% 0.041 228.3)
-
Step 950
950
#182930
oklch(26.9% 0.026 225.8)
#306378 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) | #586179 | 0.048 |
| Deuteranopia (no green cones) | #4E5A78 | 0.042 |
| Tritanopia (no blue cones) | #00696A | 0.042 |
| Achromatopsia (no color) | #5D5D5D | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306378
#306378
oklch(47.4% 0.064 227.4)
- #7A503C
#7A503C
oklch(47.3% 0.065 46.2)
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 #306378, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.031
- Denim #3B638C ΔE 0.036
- Petrol #005F6A ΔE 0.039
- Slate #516572 ΔE 0.040
- Dark Aqua #05696B ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.043
- Peacock Blue #016795 ΔE 0.048
- Dusty Grape #545775 ΔE 0.052
Use #306378 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.