#657FC2
Closest named color: Cool Blue (#4984B8). oklch(60.5% 0.107 267.1), rgb(101, 127, 194).
Aa
Black text reads best on this color (5.36:1).
About this color
#657FC2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.107 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Blue (#4984B8), ΔE 0.038 away. Black text reads best on it, at 5.36:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Cool Blue (#4984B8) |
| Black text | 5.36:1 |
| White text | 3.91:1 |
Values
| HEX | #657FC2 |
| RGB | rgb(101, 127, 194) |
| HSL | hsl(223, 43%, 58%) |
| OKLCH | oklch(60.5% 0.107 267.1) |
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 #657FC2 | 3.91:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #657FC2 | 5.36:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #657FC2 text on white | 3.91:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #657FC2 text on black | 5.36:1 | AA | Lc -35.2 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B1C0E3
oklch(80.8% 0.052 266.9)
-
Step 400
400
#899FD6
oklch(70.6% 0.085 267.4)
-
Step 500
500 (this color)
#657FC2
oklch(60.5% 0.107 267.1)
-
Step 600
600
#5570B7
oklch(55.7% 0.115 266.9)
-
Step 700
700
#455D9E
oklch(49.1% 0.108 267.1)
-
Step 800
800
#394C80
oklch(42.7% 0.09 267.4)
-
Step 900
900
#314067
oklch(37.8% 0.07 267.1)
-
Step 950
950
#1D263C
oklch(27.1% 0.043 266.6)
#657FC2 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) | #6685C5 | 0.016 |
| Deuteranopia (no green cones) | #5C7DC1 | 0.013 |
| Tritanopia (no blue cones) | #408D97 | 0.096 |
| Achromatopsia (no color) | #818181 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #657FC2
#657FC2
oklch(60.5% 0.107 267.1)
- #9D7D29
#9D7D29
oklch(60.5% 0.107 87.3)
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 #657FC2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Blue #4984B8 ΔE 0.038
- Faded Blue #658CBB ΔE 0.041
- Off Blue #5684AE ΔE 0.042
- Steel Blue #4682B4 ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.044
- Windows Blue #3778BF ΔE 0.054
- Soft Blue #6488EA ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.062
Use #657FC2 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.