#305D73
Closest named color: YInMn Blue (#415A77). oklch(45.6% 0.061 231.4), rgb(48, 93, 115).
Aa
White text reads best on this color (7.14:1).
About this color
#305D73 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.061 and its hue 231°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.023 away. White text reads best on it, at 7.14:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.93:1 |
| White text | 7.14:1 |
Values
| HEX | #305D73 |
| RGB | rgb(48, 93, 115) |
| HSL | hsl(200, 41%, 32%) |
| OKLCH | oklch(45.6% 0.061 231.4) |
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 #305D73 | 7.14:1 | AAA | Lc -89.6 | Fine for body text |
| Black text on #305D73 | 2.93:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #305D73 text on white | 7.14:1 | AAA | Lc 84.7 | Fine for body text |
| #305D73 text on black | 2.93:1 | Fails | Lc -17.3 | 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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#AAC5D4
oklch(80.8% 0.036 232.2)
-
Step 400
400
#7CA8BE
oklch(70.8% 0.057 230.2)
-
Step 500
500
#5992AE
oklch(63.2% 0.073 230.8)
-
Step 600
600
#3D7C9A
oklch(55.7% 0.08 231.2)
-
Step 700
700
#2F6883
oklch(49.1% 0.073 231.5)
-
Step 800
800 (this color)
#305D73
oklch(45.6% 0.061 231.4)
-
Step 900
900
#254656
oklch(37.6% 0.047 230.9)
-
Step 950
950
#162933
oklch(26.9% 0.031 232.5)
#305D73 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) | #525C74 | 0.042 |
| Deuteranopia (no green cones) | #495573 | 0.036 |
| Tritanopia (no blue cones) | #006364 | 0.045 |
| Achromatopsia (no color) | #585858 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305D73
#305D73
oklch(45.6% 0.061 231.4)
- #724D37
#724D37
oklch(45.6% 0.061 51.4)
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 #305D73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.023
- Petrol #005F6A ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.039
- Denim #3B638C ΔE 0.045
- Dusty Grape #545775 ΔE 0.048
- Dark Aqua #05696B ΔE 0.048
- Slate #516572 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.052
Use #305D73 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.