#648DAA
Closest named color: Blue Grey (#758DA3). oklch(62.4% 0.063 239.9), rgb(100, 141, 170).
Aa
Black text reads best on this color (5.93:1).
About this color
#648DAA is a medium-light, muted blue. In OKLCH its lightness is 62%, its chroma 0.063 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Grey (#758DA3), ΔE 0.022 away. Black text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Blue Grey (#758DA3) |
| Black text | 5.93:1 |
| White text | 3.53:1 |
Values
| HEX | #648DAA |
| RGB | rgb(100, 141, 170) |
| HSL | hsl(205, 29%, 53%) |
| OKLCH | oklch(62.4% 0.063 239.9) |
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 #648DAA | 3.53:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #648DAA | 5.93:1 | AA | Lc 41.2 | Non-text elements, placeholder text |
| #648DAA text on white | 3.53:1 | AA large text | Lc 62.9 | Content text, not long reading |
| #648DAA text on black | 5.93:1 | AA | Lc -38.8 | 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
#AFC4D3
oklch(80.9% 0.031 238.9)
-
Step 400
400
#85A5BD
oklch(70.6% 0.05 240.8)
-
Step 500
500 (this color)
#648DAA
oklch(62.4% 0.063 239.9)
-
Step 600
600
#4C7998
oklch(55.6% 0.069 239.8)
-
Step 700
700
#3D6681
oklch(49.2% 0.063 238.7)
-
Step 800
800
#335369
oklch(42.7% 0.053 239.7)
-
Step 900
900
#2D4555
oklch(37.8% 0.04 238.4)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#648DAA 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) | #808CAB | 0.035 |
| Deuteranopia (no green cones) | #7785AA | 0.031 |
| Tritanopia (no blue cones) | #4A9496 | 0.050 |
| Achromatopsia (no color) | #888888 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648DAA
#648DAA
oklch(62.4% 0.063 239.9)
- #A47F61
#A47F61
oklch(62.5% 0.063 60.3)
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 #648DAA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Grey #758DA3 ΔE 0.022
- Silver Lake Blue #778DA9 ΔE 0.023
- Dusty Blue #5A86AD ΔE 0.026
- Faded Blue #658CBB ΔE 0.028
- Light Slate Gray #778899 ΔE 0.032
- Off Blue #5684AE ΔE 0.034
- Steel #738595 ΔE 0.035
- Slate Gray #708090 ΔE 0.046
Use #648DAA 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.