#306299
Closest named color: Denim Blue (#3B5B92). oklch(48.9% 0.104 252.6), rgb(48, 98, 153).
Aa
White text reads best on this color (6.30:1).
About this color
#306299 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.104 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.022 away. White text reads best on it, at 6.30:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #306299 |
| RGB | rgb(48, 98, 153) |
| HSL | hsl(211, 52%, 39%) |
| OKLCH | oklch(48.9% 0.104 252.6) |
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 #306299 | 6.30:1 | AA | Lc -86.3 | Fine for body text |
| Black text on #306299 | 3.33:1 | AA large text | Lc 22.9 | Dividers and decoration only |
| #306299 text on white | 6.30:1 | AA | Lc 81.1 | Fine for body text |
| #306299 text on black | 3.33:1 | AA large text | Lc -20.7 | 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
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#AAC3E1
oklch(80.8% 0.051 253.1)
-
Step 400
400
#7CA4D2
oklch(70.7% 0.081 252.4)
-
Step 500
500
#5A8DC6
oklch(63.2% 0.102 252.2)
-
Step 600
600
#3F76B3
oklch(55.7% 0.112 252.6)
-
Step 700
700 (this color)
#306299
oklch(48.9% 0.104 252.6)
-
Step 800
800
#29517D
oklch(42.8% 0.086 252.4)
-
Step 900
900
#264364
oklch(37.6% 0.067 252.8)
-
Step 950
950
#17283B
oklch(27.2% 0.042 252.1)
#306299 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) | #4A659B | 0.031 |
| Deuteranopia (no green cones) | #3B5B98 | 0.021 |
| Tritanopia (no blue cones) | #006F76 | 0.082 |
| Achromatopsia (no color) | #606060 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #306299
#306299
oklch(48.9% 0.104 252.6)
- #835501
#835501
oklch(48.9% 0.104 73)
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 #306299, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.022
- Denim #3B638C ΔE 0.024
- Dusky Blue #475F94 ΔE 0.025
- Peacock Blue #016795 ΔE 0.027
- Light Navy Blue #2E5A88 ΔE 0.033
- Mid Blue #276AB3 ΔE 0.043
- Ocean Blue #03719C ΔE 0.045
- French Blue #436BAD ΔE 0.045
Use #306299 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.