#6581DD
Closest named color: Soft Blue (#6488EA). oklch(62.5% 0.142 269.2), rgb(101, 129, 221).
Aa
Black text reads best on this color (5.73:1).
About this color
#6581DD is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.142 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.024 away. Black text reads best on it, at 5.73:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.73:1 |
| White text | 3.66:1 |
Values
| HEX | #6581DD |
| RGB | rgb(101, 129, 221) |
| HSL | hsl(226, 64%, 63%) |
| OKLCH | oklch(62.5% 0.142 269.2) |
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 #6581DD | 3.66:1 | AA large text | Lc -69.5 | Content text, not long reading |
| Black text on #6581DD | 5.73:1 | AA | Lc 40.1 | Non-text elements, placeholder text |
| #6581DD text on white | 3.66:1 | AA large text | Lc 64.0 | Content text, not long reading |
| #6581DD text on black | 5.73:1 | AA | Lc -37.7 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF8
oklch(93.7% 0.02 267.3)
-
Step 200
200
#CFD9F4
oklch(88.6% 0.039 269.4)
-
Step 300
300
#AEBFEF
oklch(80.8% 0.071 269.6)
-
Step 400
400
#849DE6
oklch(70.6% 0.111 269)
-
Step 500
500 (this color)
#6581DD
oklch(62.5% 0.142 269.2)
-
Step 600
600
#4F6BCD
oklch(55.7% 0.154 269)
-
Step 700
700
#4058B1
oklch(49% 0.144 269.2)
-
Step 800
800
#354990
oklch(42.8% 0.119 269.1)
-
Step 900
900
#2E3D73
oklch(37.6% 0.094 269.8)
-
Step 950
950
#1B2443
oklch(26.9% 0.059 269.9)
#6581DD 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) | #5A8BE1 | 0.027 |
| Deuteranopia (no green cones) | #4C81DB | 0.027 |
| Tritanopia (no blue cones) | #2495A4 | 0.128 |
| Achromatopsia (no color) | #868686 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6581DD
#6581DD
oklch(62.5% 0.142 269.2)
- #A68200
#A68200
oklch(62.3% 0.127 89.1)
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 #6581DD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.042
- Cornflower #6A79F7 ΔE 0.047
- Cornflower Blue #6495ED ΔE 0.054
- Chefchaouen Blue #4895EF ΔE 0.057
- Faded Blue #658CBB ΔE 0.066
- Perrywinkle #8F8CE7 ΔE 0.067
- Lavender Blue #8B88F8 ΔE 0.068
Use #6581DD 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.