#306F97
Closest named color: Muted Blue (#3B719F). oklch(51.9% 0.09 239.7), rgb(48, 111, 151).
Aa
White text reads best on this color (5.45:1).
About this color
#306F97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.090 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.017 away. White text reads best on it, at 5.45:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.84:1 |
| White text | 5.45:1 |
Values
| HEX | #306F97 |
| RGB | rgb(48, 111, 151) |
| HSL | hsl(203, 52%, 39%) |
| OKLCH | oklch(51.9% 0.09 239.7) |
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 #306F97 | 5.45:1 | AA | Lc -82.3 | Fine for body text |
| Black text on #306F97 | 3.84:1 | AA large text | Lc 27.1 | Dividers and decoration only |
| #306F97 text on white | 5.45:1 | AA | Lc 77.0 | Fine for body text |
| #306F97 text on black | 3.84:1 | AA large text | Lc -24.7 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A8C5DA
oklch(80.9% 0.043 239.6)
-
Step 400
400
#78A7C8
oklch(70.7% 0.07 239.6)
-
Step 500
500
#5391BA
oklch(63.2% 0.089 239.3)
-
Step 600
600
#357AA6
oklch(55.5% 0.097 239.8)
-
Step 700
700 (this color)
#306F97
oklch(51.9% 0.09 239.7)
-
Step 800
800
#225474
oklch(42.7% 0.075 240)
-
Step 900
900
#22465D
oklch(37.8% 0.057 238.8)
-
Step 950
950
#142937
oklch(27% 0.038 239.4)
#306F97 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) | #5D6F99 | 0.049 |
| Deuteranopia (no green cones) | #4E6596 | 0.039 |
| Tritanopia (no blue cones) | #00797D | 0.063 |
| Achromatopsia (no color) | #696969 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306F97
#306F97
oklch(51.9% 0.09 239.7)
- #8E5B2E
#8E5B2E
oklch(51.8% 0.09 60.1)
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 #306F97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.017
- Ocean Blue #03719C ΔE 0.020
- Sea Blue #047495 ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.031
- Dull Blue #49759C ΔE 0.032
- Denim #3B638C ΔE 0.035
- Peacock Blue #016795 ΔE 0.036
- Metallic Blue #4F738E ΔE 0.037
Use #306F97 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.