#649BC6
Closest named color: Greyblue (#77A1B5). oklch(66.8% 0.087 243.1), rgb(100, 155, 198).
Aa
Black text reads best on this color (7.04:1).
About this color
#649BC6 is a medium-light, moderately saturated blue. In OKLCH its lightness is 67%, its chroma 0.087 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.040 away. Black text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #649BC6 |
| RGB | rgb(100, 155, 198) |
| HSL | hsl(206, 46%, 58%) |
| OKLCH | oklch(66.8% 0.087 243.1) |
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 #649BC6 | 2.98:1 | Fails | Lc -61.7 | Content text, not long reading |
| Black text on #649BC6 | 7.04:1 | AAA | Lc 47.7 | Large or bold text, headings |
| #649BC6 text on white | 2.98:1 | Fails | Lc 56.3 | Large or bold text, headings |
| #649BC6 text on black | 7.04:1 | AAA | Lc -45.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#AAC4DA
oklch(80.8% 0.042 243.8)
-
Step 400
400
#7CA6C8
oklch(70.7% 0.068 243.3)
-
Step 500
500 (this color)
#649BC6
oklch(66.8% 0.087 243.1)
-
Step 600
600
#3D79A6
oklch(55.6% 0.094 243.3)
-
Step 700
700
#2E668E
oklch(49.1% 0.087 242.5)
-
Step 800
800
#285374
oklch(42.7% 0.073 243.9)
-
Step 900
900
#25455D
oklch(37.7% 0.056 242.6)
-
Step 950
950
#162837
oklch(26.9% 0.037 244.9)
#649BC6 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) | #899BC8 | 0.044 |
| Deuteranopia (no green cones) | #7C91C5 | 0.036 |
| Tritanopia (no blue cones) | #34A5A9 | 0.071 |
| Achromatopsia (no color) | #959595 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #649BC6
#649BC6
oklch(66.8% 0.087 243.1)
- #BB895B
#BB895B
oklch(66.9% 0.087 63.1)
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 #649BC6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.040
- Faded Blue #658CBB ΔE 0.041
- Silver Lake Blue #778DA9 ΔE 0.051
- Blue Grey #758DA3 ΔE 0.056
- Cool Gray #8D99AE ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.057
- Bluey Grey #89A0B0 ΔE 0.058
- Cadet Blue #5F9EA0 ΔE 0.062
Use #649BC6 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.