#649EB3
Closest named color: Greyblue (#77A1B5). oklch(66.7% 0.068 223), rgb(100, 158, 179).
Aa
Black text reads best on this color (7.08:1).
About this color
#649EB3 is a medium-light, muted teal or cyan. In OKLCH its lightness is 67%, its chroma 0.068 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Greyblue (#77A1B5), ΔE 0.024 away. Black text reads best on it, at 7.08:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Greyblue (#77A1B5) |
| Black text | 7.08:1 |
| White text | 2.96:1 |
Values
| HEX | #649EB3 |
| RGB | rgb(100, 158, 179) |
| HSL | hsl(196, 34%, 55%) |
| OKLCH | oklch(66.7% 0.068 223) |
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 #649EB3 | 2.96:1 | Fails | Lc -61.5 | Content text, not long reading |
| Black text on #649EB3 | 7.08:1 | AAA | Lc 47.9 | Large or bold text, headings |
| #649EB3 text on white | 2.96:1 | Fails | Lc 56.1 | Large or bold text, headings |
| #649EB3 text on black | 7.08:1 | AAA | Lc -45.7 | 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
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#AAC6D0
oklch(80.9% 0.033 221.4)
-
Step 400
400
#7CA8B9
oklch(70.6% 0.053 223.8)
-
Step 500
500 (this color)
#649EB3
oklch(66.7% 0.068 223)
-
Step 600
600
#3C7D93
oklch(55.6% 0.074 222.8)
-
Step 700
700
#2E697D
oklch(49% 0.069 223.2)
-
Step 800
800
#275666
oklch(42.7% 0.057 223)
-
Step 900
900
#254753
oklch(37.7% 0.045 223)
-
Step 950
950
#162A30
oklch(27.1% 0.028 219)
#649EB3 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) | #929BB4 | 0.055 |
| Deuteranopia (no green cones) | #8692B3 | 0.050 |
| Tritanopia (no blue cones) | #41A5A5 | 0.045 |
| Achromatopsia (no color) | #969696 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #649EB3
#649EB3
oklch(66.7% 0.068 223)
- #B98773
#B98773
oklch(66.7% 0.068 42.7)
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 #649EB3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Greyblue #77A1B5 ΔE 0.024
- Cadet Blue #5F9EA0 ΔE 0.030
- Bluegrey #85A3B2 ΔE 0.042
- Bluey Grey #89A0B0 ΔE 0.044
- Blue Grey #758DA3 ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.048
- Cool Gray #8D99AE ΔE 0.048
- Dull Teal #5F9E8F ΔE 0.056
Use #649EB3 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.