#648EA8
Closest named color: Blue Grey (#758DA3). oklch(62.6% 0.061 236.2), rgb(100, 142, 168).
Aa
Black text reads best on this color (5.97:1).
About this color
#648EA8 is a medium-light, muted blue. In OKLCH its lightness is 63%, its chroma 0.061 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.021 away. Black text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #648EA8 |
| RGB | rgb(100, 142, 168) |
| HSL | hsl(203, 28%, 53%) |
| OKLCH | oklch(62.6% 0.061 236.2) |
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 #648EA8 | 3.51:1 | AA large text | Lc -68.1 | Content text, not long reading |
| Black text on #648EA8 | 5.97:1 | AA | Lc 41.4 | Non-text elements, placeholder text |
| #648EA8 text on white | 3.51:1 | AA large text | Lc 62.7 | Content text, not long reading |
| #648EA8 text on black | 5.97:1 | AA | Lc -39.0 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AFC4D2
oklch(80.9% 0.03 237)
-
Step 400
400
#85A6BB
oklch(70.8% 0.048 236.3)
-
Step 500
500 (this color)
#648EA8
oklch(62.6% 0.061 236.2)
-
Step 600
600
#4C7995
oklch(55.5% 0.066 237)
-
Step 700
700
#3D667F
oklch(49.1% 0.061 236.6)
-
Step 800
800
#335367
oklch(42.6% 0.05 237.1)
-
Step 900
900
#2D4554
oklch(37.7% 0.039 236.7)
-
Step 950
950
#1A2831
oklch(26.8% 0.025 237.2)
#648EA8 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) | #828DA9 | 0.038 |
| Deuteranopia (no green cones) | #7985A8 | 0.035 |
| Tritanopia (no blue cones) | #4A9596 | 0.048 |
| Achromatopsia (no color) | #898989 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648EA8
#648EA8
oklch(62.6% 0.061 236.2)
- #A57F64
#A57F64
oklch(62.6% 0.061 56.7)
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 #648EA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.021
- Silver Lake Blue #778DA9 ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.030
- Light Slate Gray #778899 ΔE 0.030
- Faded Blue #658CBB ΔE 0.032
- Steel #738595 ΔE 0.034
- Off Blue #5684AE ΔE 0.038
- Slate Gray #708090 ΔE 0.046
Use #648EA8 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.