#648BB8
Closest named color: Faded Blue (#658CBB). oklch(62.6% 0.081 252.6), rgb(100, 139, 184).
Aa
Black text reads best on this color (5.92:1).
About this color
#648BB8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.081 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.005 away. Black text reads best on it, at 5.92:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.92:1 |
| White text | 3.54:1 |
Values
| HEX | #648BB8 |
| RGB | rgb(100, 139, 184) |
| HSL | hsl(212, 37%, 56%) |
| OKLCH | oklch(62.6% 0.081 252.6) |
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 #648BB8 | 3.54:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #648BB8 | 5.92:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #648BB8 text on white | 3.54:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #648BB8 text on black | 5.92:1 | AA | Lc -38.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AFC3DA
oklch(80.9% 0.039 252)
-
Step 400
400
#85A4C8
oklch(70.8% 0.063 252.5)
-
Step 500
500 (this color)
#648BB8
oklch(62.6% 0.081 252.6)
-
Step 600
600
#4C76A6
oklch(55.6% 0.089 252.7)
-
Step 700
700
#3D638E
oklch(49.1% 0.082 252.5)
-
Step 800
800
#335173
oklch(42.7% 0.067 252.5)
-
Step 900
900
#2D435D
oklch(37.7% 0.053 253.2)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#648BB8 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) | #7A8DBA | 0.029 |
| Deuteranopia (no green cones) | #6F84B7 | 0.022 |
| Tritanopia (no blue cones) | #42959A | 0.071 |
| Achromatopsia (no color) | #888888 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648BB8
#648BB8
oklch(62.6% 0.081 252.6)
- #A6804F
#A6804F
oklch(62.6% 0.081 72.5)
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 #648BB8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.005
- Dusty Blue #5A86AD ΔE 0.024
- Off Blue #5684AE ΔE 0.029
- Silver Lake Blue #778DA9 ΔE 0.033
- Cool Blue #4984B8 ΔE 0.037
- Blue Grey #758DA3 ΔE 0.039
- Steel Blue #4682B4 ΔE 0.044
- Light Slate Gray #778899 ΔE 0.049
Use #648BB8 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.