#305F88
Closest named color: Light Navy Blue (#2E5A88). oklch(47.2% 0.084 247.1), rgb(48, 95, 136).
Aa
White text reads best on this color (6.73:1).
About this color
#305F88 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.084 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.016 away. White text reads best on it, at 6.73:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 3.11:1 |
| White text | 6.73:1 |
Values
| HEX | #305F88 |
| RGB | rgb(48, 95, 136) |
| HSL | hsl(208, 48%, 36%) |
| OKLCH | oklch(47.2% 0.084 247.1) |
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 #305F88 | 6.73:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #305F88 | 3.11:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #305F88 text on white | 6.73:1 | AA | Lc 83.0 | Fine for body text |
| #305F88 text on black | 3.11:1 | AA large text | Lc -18.9 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ACC4DA
oklch(80.9% 0.041 246)
-
Step 400
400
#80A5C8
oklch(70.7% 0.066 247.3)
-
Step 500
500
#5F8EBA
oklch(63.1% 0.084 247.7)
-
Step 600
600
#4478A6
oklch(55.7% 0.091 247)
-
Step 700
700 (this color)
#305F88
oklch(47.2% 0.084 247.1)
-
Step 800
800
#2D5273
oklch(42.6% 0.07 247.2)
-
Step 900
900
#29445D
oklch(37.7% 0.054 247.6)
-
Step 950
950
#182836
oklch(27% 0.034 245.9)
#305F88 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) | #4D608A | 0.034 |
| Deuteranopia (no green cones) | #415887 | 0.025 |
| Tritanopia (no blue cones) | #00696D | 0.067 |
| Achromatopsia (no color) | #5C5C5C | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305F88
#305F88
oklch(47.2% 0.084 247.1)
- #7B5121
#7B5121
oklch(47.2% 0.084 66.6)
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 #305F88, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.016
- Denim #3B638C ΔE 0.018
- Denim Blue #3B5B92 ΔE 0.025
- YInMn Blue #415A77 ΔE 0.031
- Peacock Blue #016795 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.034
- Dusk Blue #26538D ΔE 0.041
- Dusk #4E5481 ΔE 0.044
Use #305F88 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.