#305F77
Closest named color: YInMn Blue (#415A77). oklch(46.3% 0.064 232.8), rgb(48, 95, 119).
Aa
White text reads best on this color (6.93:1).
About this color
#305F77 is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.064 and its hue 233°. 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 6.93:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 3.02:1 |
| White text | 6.93:1 |
Values
| HEX | #305F77 |
| RGB | rgb(48, 95, 119) |
| HSL | hsl(200, 43%, 33%) |
| OKLCH | oklch(46.3% 0.064 232.8) |
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 #305F77 | 6.93:1 | AA | Lc -88.8 | Fine for body text |
| Black text on #305F77 | 3.02:1 | AA large text | Lc 20.2 | Dividers and decoration only |
| #305F77 text on white | 6.93:1 | AA | Lc 83.8 | Fine for body text |
| #305F77 text on black | 3.02:1 | AA large text | Lc -18.1 | 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
#CEDBE3
oklch(88.4% 0.018 234.5)
-
Step 300
300
#AEC5D2
oklch(81% 0.031 232.5)
-
Step 400
400
#82A7BB
oklch(70.8% 0.05 232)
-
Step 500
500
#6191AA
oklch(63.2% 0.064 231.8)
-
Step 600
600
#477A95
oklch(55.5% 0.069 233)
-
Step 700
700 (this color)
#305F77
oklch(46.3% 0.064 232.8)
-
Step 800
800
#2F5468
oklch(42.7% 0.054 233.6)
-
Step 900
900
#2A4654
oklch(37.8% 0.041 231)
-
Step 950
950
#192931
oklch(27% 0.026 230.6)
#305F77 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) | #535E78 | 0.042 |
| Deuteranopia (no green cones) | #495677 | 0.038 |
| Tritanopia (no blue cones) | #006567 | 0.046 |
| Achromatopsia (no color) | #5A5A5A | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305F77
#305F77
oklch(46.3% 0.064 232.8)
- #754E36
#754E36
oklch(46.1% 0.064 52.1)
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 #305F77, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.023
- Light Navy Blue #2E5A88 ΔE 0.036
- Petrol #005F6A ΔE 0.037
- Denim #3B638C ΔE 0.038
- Slate #516572 ΔE 0.046
- Dark Aqua #05696B ΔE 0.047
- Dusty Grape #545775 ΔE 0.048
- Peacock Blue #016795 ΔE 0.050
Use #305F77 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.