#6387DE
Closest named color: Soft Blue (#6488EA). oklch(63.6% 0.137 265.7), rgb(99, 135, 222).
Aa
Black text reads best on this color (6.05:1).
About this color
#6387DE is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.137 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.018 away. Black text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.05:1 |
| White text | 3.47:1 |
Values
| HEX | #6387DE |
| RGB | rgb(99, 135, 222) |
| HSL | hsl(222, 65%, 63%) |
| OKLCH | oklch(63.6% 0.137 265.7) |
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 #6387DE | 3.47:1 | AA large text | Lc -67.6 | Content text, not long reading |
| Black text on #6387DE | 6.05:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #6387DE text on white | 3.47:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #6387DE text on black | 6.05:1 | AA | Lc -39.6 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CDD9F3
oklch(88.4% 0.038 265.8)
-
Step 300
300
#ACC0ED
oklch(80.8% 0.068 266.1)
-
Step 400
400
#819FE4
oklch(70.8% 0.107 265.8)
-
Step 500
500 (this color)
#6387DE
oklch(63.6% 0.137 265.7)
-
Step 600
600
#496DCA
oklch(55.6% 0.15 265.8)
-
Step 700
700
#3A5BAF
oklch(49.2% 0.139 265.5)
-
Step 800
800
#304B8D
oklch(42.8% 0.114 265.2)
-
Step 900
900
#2B3F71
oklch(37.8% 0.089 265.9)
-
Step 950
950
#192542
oklch(27% 0.057 265.8)
#6387DE 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) | #6390E1 | 0.024 |
| Deuteranopia (no green cones) | #5484DC | 0.019 |
| Tritanopia (no blue cones) | #159AA8 | 0.123 |
| Achromatopsia (no color) | #8A8A8A | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6387DE
#6387DE
oklch(63.6% 0.137 265.7)
- #AE8400
#AE8400
oklch(63.6% 0.13 86)
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 #6387DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.018
- Dark Sky Blue #448EE4 ΔE 0.032
- Cornflower Blue #6495ED ΔE 0.040
- Chefchaouen Blue #4895EF ΔE 0.044
- Cornflower #6A79F7 ΔE 0.056
- Faded Blue #658CBB ΔE 0.059
- Perrywinkle #8F8CE7 ΔE 0.062
- Dodger Blue #1E90FF ΔE 0.065
Use #6387DE 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.