#305F97
Closest named color: Denim Blue (#3B5B92). oklch(48% 0.104 254.2), rgb(48, 95, 151).
Aa
White text reads best on this color (6.54:1).
About this color
#305F97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.104 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.015 away. White text reads best on it, at 6.54:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.20:1 |
| White text | 6.54:1 |
Values
| HEX | #305F97 |
| RGB | rgb(48, 95, 151) |
| HSL | hsl(213, 52%, 39%) |
| OKLCH | oklch(48% 0.104 254.2) |
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 #305F97 | 6.54:1 | AA | Lc -87.3 | Fine for body text |
| Black text on #305F97 | 3.20:1 | AA large text | Lc 21.9 | Dividers and decoration only |
| #305F97 text on white | 6.54:1 | AA | Lc 82.2 | Fine for body text |
| #305F97 text on black | 3.20:1 | AA large text | Lc -19.7 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7EA3D2
oklch(70.6% 0.08 254.7)
-
Step 500
500
#5C8CC7
oklch(63.1% 0.104 254.3)
-
Step 600
600
#4175B3
oklch(55.5% 0.112 254)
-
Step 700
700 (this color)
#305F97
oklch(48% 0.104 254.2)
-
Step 800
800
#2B507D
oklch(42.6% 0.087 254.4)
-
Step 900
900
#274365
oklch(37.8% 0.068 254.1)
-
Step 950
950
#17273B
oklch(26.9% 0.043 254.6)
#305F97 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) | #466399 | 0.028 |
| Deuteranopia (no green cones) | #375996 | 0.017 |
| Tritanopia (no blue cones) | #006C74 | 0.082 |
| Achromatopsia (no color) | #5D5D5D | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #305F97
#305F97
oklch(48% 0.104 254.2)
- #7F5300
#7F5300
oklch(47.9% 0.102 73.8)
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 #305F97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.015
- Dusky Blue #475F94 ΔE 0.025
- Denim #3B638C ΔE 0.026
- Light Navy Blue #2E5A88 ΔE 0.027
- Peacock Blue #016795 ΔE 0.031
- Dusk Blue #26538D ΔE 0.039
- Mid Blue #276AB3 ΔE 0.049
- Twilight #4E518B ΔE 0.050
Use #305F97 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.