#306D97
Closest named color: Muted Blue (#3B719F). oklch(51.4% 0.092 241.7), rgb(48, 109, 151).
Aa
White text reads best on this color (5.58:1).
About this color
#306D97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.092 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.020 away. White text reads best on it, at 5.58:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.76:1 |
| White text | 5.58:1 |
Values
| HEX | #306D97 |
| RGB | rgb(48, 109, 151) |
| HSL | hsl(204, 52%, 39%) |
| OKLCH | oklch(51.4% 0.092 241.7) |
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 #306D97 | 5.58:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #306D97 | 3.76:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #306D97 text on white | 5.58:1 | AA | Lc 77.7 | Fine for body text |
| #306D97 text on black | 3.76:1 | AA large text | Lc -24.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDCE8
oklch(88.6% 0.024 240.1)
-
Step 300
300
#A8C5DB
oklch(80.9% 0.044 240.9)
-
Step 400
400
#79A7C9
oklch(70.8% 0.07 241)
-
Step 500
500
#5490BC
oklch(63.1% 0.091 242)
-
Step 600
600
#377AA8
oklch(55.7% 0.099 241.6)
-
Step 700
700 (this color)
#306D97
oklch(51.4% 0.092 241.7)
-
Step 800
800
#235475
oklch(42.8% 0.076 241.2)
-
Step 900
900
#22455E
oklch(37.6% 0.059 241.7)
-
Step 950
950
#152937
oklch(27.1% 0.037 240.5)
#306D97 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) | #5A6D99 | 0.046 |
| Deuteranopia (no green cones) | #4C6396 | 0.038 |
| Tritanopia (no blue cones) | #00777C | 0.064 |
| Achromatopsia (no color) | #686868 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306D97
#306D97
oklch(51.4% 0.092 241.7)
- #8D5A2A
#8D5A2A
oklch(51.4% 0.092 61.5)
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 #306D97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.020
- Ocean Blue #03719C ΔE 0.021
- Sea Blue #047495 ΔE 0.027
- Denim #3B638C ΔE 0.030
- Peacock Blue #016795 ΔE 0.031
- Flat Blue #3C73A8 ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Metallic Blue #4F738E ΔE 0.041
Use #306D97 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.