#305E75
Closest named color: YInMn Blue (#415A77). oklch(45.9% 0.063 232.1), rgb(48, 94, 117).
Aa
White text reads best on this color (7.03:1).
About this color
#305E75 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.063 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.022 away. White text reads best on it, at 7.03:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.98:1 |
| White text | 7.03:1 |
Values
| HEX | #305E75 |
| RGB | rgb(48, 94, 117) |
| HSL | hsl(200, 42%, 32%) |
| OKLCH | oklch(45.9% 0.063 232.1) |
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 #305E75 | 7.03:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #305E75 | 2.98:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #305E75 text on white | 7.03:1 | AAA | Lc 84.2 | Fine for body text |
| #305E75 text on black | 2.98:1 | Fails | Lc -17.7 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC5D1
oklch(81% 0.03 230.4)
-
Step 400
400
#83A7BA
oklch(70.8% 0.048 231.3)
-
Step 500
500
#6290A9
oklch(63% 0.063 232.9)
-
Step 600
600
#487A94
oklch(55.5% 0.067 232.5)
-
Step 700
700 (this color)
#305E75
oklch(45.9% 0.063 232.1)
-
Step 800
800
#305467
oklch(42.7% 0.052 232.9)
-
Step 900
900
#2B4654
oklch(37.9% 0.041 231.9)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#305E75 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) | #535D76 | 0.043 |
| Deuteranopia (no green cones) | #495675 | 0.036 |
| Tritanopia (no blue cones) | #006466 | 0.045 |
| Achromatopsia (no color) | #595959 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305E75
#305E75
oklch(45.9% 0.063 232.1)
- #744E36
#744E36
oklch(46% 0.063 52.8)
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 #305E75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.022
- Petrol #005F6A ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.037
- Denim #3B638C ΔE 0.041
- Dark Aqua #05696B ΔE 0.047
- Dusty Grape #545775 ΔE 0.047
- Slate #516572 ΔE 0.048
- Deep Sea Blue #015482 ΔE 0.052
Use #305E75 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.