#308FFF
Closest named color: Dodger Blue (#1E90FF). oklch(65.3% 0.188 255.4), rgb(48, 143, 255).
Aa
Black text reads best on this color (6.49:1).
About this color
#308FFF is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.188 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.008 away. Black text reads best on it, at 6.49:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.49:1 |
| White text | 3.23:1 |
Values
| HEX | #308FFF |
| RGB | rgb(48, 143, 255) |
| HSL | hsl(212, 100%, 59%) |
| OKLCH | oklch(65.3% 0.188 255.4) |
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 #308FFF | 3.23:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #308FFF | 6.49:1 | AA | Lc 45.0 | Large or bold text, headings |
| #308FFF text on white | 3.23:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #308FFF text on black | 6.49:1 | AA | Lc -42.7 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C3DBFB
oklch(88.4% 0.051 255.7)
-
Step 300
300
#99C4FC
oklch(81% 0.092 255.3)
-
Step 400
400
#5EA2FA
oklch(70.6% 0.147 255.6)
-
Step 500
500 (this color)
#308FFF
oklch(65.3% 0.188 255.4)
-
Step 600
600
#0070DC
oklch(55.6% 0.186 255.4)
-
Step 700
700
#005EBA
oklch(49.1% 0.163 255.3)
-
Step 800
800
#004D9A
oklch(42.7% 0.142 255.2)
-
Step 900
900
#034080
oklch(37.7% 0.122 255.2)
-
Step 950
950
#07264B
oklch(27% 0.077 255.4)
#308FFF 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) | #5499FF | 0.040 |
| Deuteranopia (no green cones) | #2687FD | 0.022 |
| Tritanopia (no blue cones) | #00AABA | 0.143 |
| Achromatopsia (no color) | #8F8F8F | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #308FFF
#308FFF
oklch(65.3% 0.188 255.4)
- #C08200
#C08200
oklch(65.3% 0.138 75.4)
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 #308FFF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.008
- Chefchaouen Blue #4895EF ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.041
- Soft Blue #6488EA ΔE 0.050
- Cornflower Blue #6495ED ΔE 0.054
- Clear Blue #247AFD ΔE 0.055
- Cornflower #6A79F7 ΔE 0.067
- Water Blue #0E87CC ΔE 0.081
Use #308FFF 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.