#6389FE
Closest named color: Soft Blue (#6488EA). oklch(66% 0.178 267.8), rgb(99, 137, 254).
Aa
Black text reads best on this color (6.53:1).
About this color
#6389FE is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.178 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.030 away. Black text reads best on it, at 6.53:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.53:1 |
| White text | 3.21:1 |
Values
| HEX | #6389FE |
| RGB | rgb(99, 137, 254) |
| HSL | hsl(225, 99%, 69%) |
| OKLCH | oklch(66% 0.178 267.8) |
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 #6389FE | 3.21:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #6389FE | 6.53:1 | AA | Lc 45.0 | Large or bold text, headings |
| #6389FE text on white | 3.21:1 | AA large text | Lc 59.0 | Large or bold text, headings |
| #6389FE text on black | 6.53:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CBD9FA
oklch(88.5% 0.048 267.2)
-
Step 300
300
#A8BFFA
oklch(80.9% 0.088 267.9)
-
Step 400
400
#7B9CF7
oklch(70.7% 0.139 267.7)
-
Step 500
500 (this color)
#6389FE
oklch(66% 0.178 267.8)
-
Step 600
600
#4366E3
oklch(55.6% 0.194 267.7)
-
Step 700
700
#3554C5
oklch(49.2% 0.18 267.6)
-
Step 800
800
#2C459F
oklch(42.6% 0.149 267.8)
-
Step 900
900
#273B7E
oklch(37.6% 0.116 267.9)
-
Step 950
950
#17234A
oklch(26.9% 0.074 268.3)
#6389FE 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) | #5097FF | 0.037 |
| Deuteranopia (no green cones) | #3589FC | 0.040 |
| Tritanopia (no blue cones) | #00A4B7 | 0.153 |
| Achromatopsia (no color) | #909090 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6389FE
#6389FE
oklch(66% 0.178 267.8)
- #B58C00
#B58C00
oklch(66.1% 0.135 87.7)
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 #6389FE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.030
- Cornflower #6A79F7 ΔE 0.039
- Cornflower Blue #6495ED ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.046
- Dodger Blue #1E90FF ΔE 0.049
- Lavender Blue #8B88F8 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.053
- Periwinkle #8E82FE ΔE 0.055
Use #6389FE 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.