#306398
Closest named color: Denim (#3B638C). oklch(49% 0.102 251.4), rgb(48, 99, 152).
Aa
White text reads best on this color (6.24:1).
About this color
#306398 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.102 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.021 away. White text reads best on it, at 6.24:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.36:1 |
| White text | 6.24:1 |
Values
| HEX | #306398 |
| RGB | rgb(48, 99, 152) |
| HSL | hsl(211, 52%, 39%) |
| OKLCH | oklch(49% 0.102 251.4) |
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 #306398 | 6.24:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #306398 | 3.36:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #306398 text on white | 6.24:1 | AA | Lc 80.9 | Fine for body text |
| #306398 text on black | 3.36:1 | AA large text | Lc -21.0 | 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
#E3EBF3
oklch(93.6% 0.014 248)
-
Step 200
200
#CCDBEB
oklch(88.5% 0.027 249.9)
-
Step 300
300
#AAC3E0
oklch(80.8% 0.049 252.3)
-
Step 400
400
#7CA4D1
oklch(70.6% 0.079 251.9)
-
Step 500
500
#5A8DC4
oklch(63.1% 0.1 251.4)
-
Step 600
600
#3E76B1
oklch(55.5% 0.11 251.5)
-
Step 700
700 (this color)
#306398
oklch(49% 0.102 251.4)
-
Step 800
800
#29517B
oklch(42.7% 0.084 251.4)
-
Step 900
900
#264363
oklch(37.6% 0.065 252.1)
-
Step 950
950
#17283A
oklch(27.1% 0.041 250.8)
#306398 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) | #4C669A | 0.033 |
| Deuteranopia (no green cones) | #3D5C97 | 0.022 |
| Tritanopia (no blue cones) | #006F76 | 0.079 |
| Achromatopsia (no color) | #606060 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306398
#306398
oklch(49% 0.102 251.4)
- #84550A
#84550A
oklch(49% 0.102 71.1)
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 #306398, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.024
- Dusky Blue #475F94 ΔE 0.025
- Peacock Blue #016795 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.034
- Ocean Blue #03719C ΔE 0.042
- Mid Blue #276AB3 ΔE 0.044
- Muted Blue #3B719F ΔE 0.044
Use #306398 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.