#649CBC
Closest named color: Greyblue (#77A1B5). oklch(66.6% 0.076 234.6), rgb(100, 156, 188).
Aa
Black text reads best on this color (7.02:1).
About this color
#649CBC is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.076 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.030 away. Black text reads best on it, at 7.02:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.02:1 |
| White text | 2.98:1 |
Values
| HEX | #649CBC |
| RGB | rgb(100, 156, 188) |
| HSL | hsl(202, 40%, 56%) |
| OKLCH | oklch(66.6% 0.076 234.6) |
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 #649CBC | 2.98:1 | Fails | Lc -61.8 | Content text, not long reading |
| Black text on #649CBC | 7.02:1 | AAA | Lc 47.6 | Large or bold text, headings |
| #649CBC text on white | 2.98:1 | Fails | Lc 56.4 | Large or bold text, headings |
| #649CBC text on black | 7.02:1 | AAA | Lc -45.3 | Large or bold text, headings |
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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#AAC5D5
oklch(80.8% 0.037 233.9)
-
Step 400
400
#7CA7C0
oklch(70.6% 0.059 234.2)
-
Step 500
500 (this color)
#649CBC
oklch(66.6% 0.076 234.6)
-
Step 600
600
#3D7B9C
oklch(55.6% 0.082 234.2)
-
Step 700
700
#2F6886
oklch(49.2% 0.076 234.3)
-
Step 800
800
#28546D
oklch(42.6% 0.064 235.9)
-
Step 900
900
#254658
oklch(37.7% 0.05 234)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#649CBC 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) | #8D9BBE | 0.049 |
| Deuteranopia (no green cones) | #8191BC | 0.043 |
| Tritanopia (no blue cones) | #3CA4A6 | 0.058 |
| Achromatopsia (no color) | #959595 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #649CBC
#649CBC
oklch(66.6% 0.076 234.6)
- #B98867
#B98867
oklch(66.7% 0.076 55)
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 #649CBC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.030
- Silver Lake Blue #778DA9 ΔE 0.045
- Faded Blue #658CBB ΔE 0.045
- Cadet Blue #5F9EA0 ΔE 0.046
- Bluegrey #85A3B2 ΔE 0.048
- Blue Grey #758DA3 ΔE 0.048
- Bluey Grey #89A0B0 ΔE 0.049
- Cool Gray #8D99AE ΔE 0.050
Use #649CBC 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.