#305F71
Closest named color: YInMn Blue (#415A77). oklch(46% 0.059 225.3), rgb(48, 95, 113).
Aa
White text reads best on this color (6.99:1).
About this color
#305F71 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 46%, its chroma 0.059 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.027 away. White text reads best on it, at 6.99:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.00:1 |
| White text | 6.99:1 |
Values
| HEX | #305F71 |
| RGB | rgb(48, 95, 113) |
| HSL | hsl(197, 40%, 32%) |
| OKLCH | oklch(46% 0.059 225.3) |
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 #305F71 | 6.99:1 | AA | Lc -89.1 | Fine for body text |
| Black text on #305F71 | 3.00:1 | AA large text | Lc 19.9 | Dividers and decoration only |
| #305F71 text on white | 6.99:1 | AA | Lc 84.1 | Fine for body text |
| #305F71 text on black | 3.00:1 | AA large text | Lc -17.9 | 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
#CFDCE1
oklch(88.6% 0.016 222.7)
-
Step 300
300
#AEC5CF
oklch(80.9% 0.029 225.8)
-
Step 400
400
#83A7B6
oklch(70.7% 0.045 225.3)
-
Step 500
500
#6291A4
oklch(63% 0.058 225.3)
-
Step 600
600
#487B90
oklch(55.5% 0.064 226.4)
-
Step 700
700 (this color)
#305F71
oklch(46% 0.059 225.3)
-
Step 800
800
#305563
oklch(42.8% 0.048 224.4)
-
Step 900
900
#2B4651
oklch(37.7% 0.038 225.7)
-
Step 950
950
#19292F
oklch(26.9% 0.024 223.4)
#305F71 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) | #555D72 | 0.046 |
| Deuteranopia (no green cones) | #4C5671 | 0.041 |
| Tritanopia (no blue cones) | #006465 | 0.039 |
| Achromatopsia (no color) | #595959 | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305F71
#305F71
oklch(46% 0.059 225.3)
- #744D3C
#744D3C
oklch(45.9% 0.06 44.4)
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 #305F71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.027
- Petrol #005F6A ΔE 0.031
- Dark Aqua #05696B ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.045
- Slate #516572 ΔE 0.045
- Denim #3B638C ΔE 0.047
- Dusty Grape #545775 ΔE 0.051
- Dark Green Blue #1F6357 ΔE 0.052
Use #305F71 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.