#305F73
Closest named color: YInMn Blue (#415A77). oklch(46.1% 0.061 228), rgb(48, 95, 115).
Aa
White text reads best on this color (6.97:1).
About this color
#305F73 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.061 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.025 away. White text reads best on it, at 6.97:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.01:1 |
| White text | 6.97:1 |
Values
| HEX | #305F73 |
| RGB | rgb(48, 95, 115) |
| HSL | hsl(198, 41%, 32%) |
| OKLCH | oklch(46.1% 0.061 228) |
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 #305F73 | 6.97:1 | AA | Lc -89.0 | Fine for body text |
| Black text on #305F73 | 3.01:1 | AA large text | Lc 20.0 | Dividers and decoration only |
| #305F73 text on white | 6.97:1 | AA | Lc 84.0 | Fine for body text |
| #305F73 text on black | 3.01:1 | AA large text | Lc -18.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E4EBEE
oklch(93.6% 0.009 225.1)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC5D0
oklch(81% 0.029 228.2)
-
Step 400
400
#82A7B8
oklch(70.7% 0.047 227.7)
-
Step 500
500
#6291A6
oklch(63.1% 0.06 227.7)
-
Step 600
600
#487B91
oklch(55.6% 0.065 227.6)
-
Step 700
700 (this color)
#305F73
oklch(46.1% 0.061 228)
-
Step 800
800
#2F5565
oklch(42.8% 0.051 227.1)
-
Step 900
900
#2A4652
oklch(37.7% 0.04 227)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#305F73 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) | #555D74 | 0.045 |
| Deuteranopia (no green cones) | #4B5673 | 0.040 |
| Tritanopia (no blue cones) | #006565 | 0.043 |
| Achromatopsia (no color) | #595959 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305F73
#305F73
oklch(46.1% 0.061 228)
- #744E3A
#744E3A
oklch(46.1% 0.06 48.5)
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 #305F73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.025
- Petrol #005F6A ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.042
- Dark Aqua #05696B ΔE 0.043
- Denim #3B638C ΔE 0.044
- Slate #516572 ΔE 0.045
- Dusty Grape #545775 ΔE 0.049
- Dark Green Blue #1F6357 ΔE 0.055
Use #305F73 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.