#658FDF
Closest named color: Cornflower Blue (#6495ED). oklch(65.5% 0.129 262.4), rgb(101, 143, 223).
Aa
Black text reads best on this color (6.54:1).
About this color
#658FDF is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.129 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.024 away. Black text reads best on it, at 6.54:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.54:1 |
| White text | 3.20:1 |
Values
| HEX | #658FDF |
| RGB | rgb(101, 143, 223) |
| HSL | hsl(219, 66%, 64%) |
| OKLCH | oklch(65.5% 0.129 262.4) |
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 #658FDF | 3.20:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #658FDF | 6.54:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #658FDF text on white | 3.20:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #658FDF text on black | 6.54:1 | AA | Lc -42.6 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF1
oklch(88.6% 0.035 262)
-
Step 300
300
#ABC1EA
oklch(80.8% 0.063 262.8)
-
Step 400
400
#7EA0E0
oklch(70.6% 0.102 262.6)
-
Step 500
500 (this color)
#658FDF
oklch(65.5% 0.129 262.4)
-
Step 600
600
#4570C4
oklch(55.6% 0.139 262.4)
-
Step 700
700
#365DAA
oklch(49.1% 0.131 262.4)
-
Step 800
800
#2D4C89
oklch(42.5% 0.108 262.5)
-
Step 900
900
#28406E
oklch(37.6% 0.085 262.3)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#658FDF 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) | #6F96E2 | 0.023 |
| Deuteranopia (no green cones) | #608ADD | 0.015 |
| Tritanopia (no blue cones) | #1AA1AC | 0.117 |
| Achromatopsia (no color) | #909090 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #658FDF
#658FDF
oklch(65.5% 0.129 262.4)
- #B78818
#B78818
oklch(65.5% 0.129 82.6)
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 #658FDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.024
- Soft Blue #6488EA ΔE 0.027
- Dark Sky Blue #448EE4 ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.034
- Faded Blue #658CBB ΔE 0.054
- Perrywinkle #8F8CE7 ΔE 0.055
- Lavender Blue #8B88F8 ΔE 0.065
- Dodger Blue #1E90FF ΔE 0.066
Use #658FDF 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.