#627ACC
Closest named color: Windows Blue (#3778BF). oklch(59.8% 0.128 269.9), rgb(98, 122, 204).
Aa
Black text reads best on this color (5.17:1).
About this color
#627ACC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.128 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.051 away. Black text reads best on it, at 5.17:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.17:1 |
| White text | 4.05:1 |
Values
| HEX | #627ACC |
| RGB | rgb(98, 122, 204) |
| HSL | hsl(226, 51%, 59%) |
| OKLCH | oklch(59.8% 0.128 269.9) |
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 #627ACC | 4.05:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #627ACC | 5.17:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #627ACC text on white | 4.05:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #627ACC text on black | 5.17:1 | AA | Lc -34.0 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF6
oklch(93.7% 0.017 267.8)
-
Step 200
200
#D0D9F1
oklch(88.6% 0.034 269.3)
-
Step 300
300
#B0BFEA
oklch(80.8% 0.063 269.9)
-
Step 400
400
#889EE0
oklch(70.8% 0.1 269.6)
-
Step 500
500 (this color)
#627ACC
oklch(59.8% 0.128 269.9)
-
Step 600
600
#546CC4
oklch(55.6% 0.139 269.9)
-
Step 700
700
#445AAA
oklch(49.2% 0.13 269.6)
-
Step 800
800
#384A89
oklch(42.7% 0.107 269.5)
-
Step 900
900
#303E6E
oklch(37.7% 0.084 269.8)
-
Step 950
950
#1C2540
oklch(27.1% 0.052 268.8)
#627ACC 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) | #5983CF | 0.024 |
| Deuteranopia (no green cones) | #4D7ACA | 0.024 |
| Tritanopia (no blue cones) | #318C99 | 0.115 |
| Achromatopsia (no color) | #7E7E7E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #627ACC
#627ACC
oklch(59.8% 0.128 269.9)
- #9C7B00
#9C7B00
oklch(59.8% 0.122 89.8)
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 #627ACC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.051
- Cool Blue #4984B8 ΔE 0.053
- Soft Blue #6488EA ΔE 0.054
- Steel Blue #4682B4 ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.061
- Off Blue #5684AE ΔE 0.061
- Faded Blue #658CBB ΔE 0.062
- Water Blue #0E87CC ΔE 0.064
Use #627ACC 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.