#649CB5
Closest named color: Greyblue (#77A1B5). oklch(66.3% 0.07 228), rgb(100, 156, 181).
Aa
Black text reads best on this color (6.96:1).
About this color
#649CB5 is a medium-light, muted teal or cyan. In OKLCH its lightness is 66%, its chroma 0.070 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.027 away. Black text reads best on it, at 6.96:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #649CB5 |
| RGB | rgb(100, 156, 181) |
| HSL | hsl(199, 35%, 55%) |
| OKLCH | oklch(66.3% 0.07 228) |
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 #649CB5 | 3.01:1 | AA large text | Lc -62.1 | Content text, not long reading |
| Black text on #649CB5 | 6.96:1 | AA | Lc 47.3 | Large or bold text, headings |
| #649CB5 text on white | 3.01:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #649CB5 text on black | 6.96:1 | AA | Lc -45.0 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE3
oklch(88.5% 0.019 227.3)
-
Step 300
300
#ABC5D2
oklch(80.8% 0.034 229.4)
-
Step 400
400
#7DA8BC
oklch(70.8% 0.055 228.3)
-
Step 500
500 (this color)
#649CB5
oklch(66.3% 0.07 228)
-
Step 600
600
#3E7C96
oklch(55.6% 0.075 227.8)
-
Step 700
700
#306880
oklch(49% 0.07 228.7)
-
Step 800
800
#295568
oklch(42.7% 0.058 228.5)
-
Step 900
900
#264655
oklch(37.6% 0.046 229.9)
-
Step 950
950
#172932
oklch(27% 0.029 231)
#649CB5 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) | #8F9AB6 | 0.052 |
| Deuteranopia (no green cones) | #8391B5 | 0.045 |
| Tritanopia (no blue cones) | #40A3A4 | 0.049 |
| Achromatopsia (no color) | #949494 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #649CB5
#649CB5
oklch(66.3% 0.07 228)
- #B7876E
#B7876E
oklch(66.4% 0.069 48.6)
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 #649CB5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.027
- Cadet Blue #5F9EA0 ΔE 0.035
- Silver Lake Blue #778DA9 ΔE 0.043
- Blue Grey #758DA3 ΔE 0.044
- Bluegrey #85A3B2 ΔE 0.046
- Bluey Grey #89A0B0 ΔE 0.047
- Cool Gray #8D99AE ΔE 0.048
- Faded Blue #658CBB ΔE 0.049
Use #649CB5 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.