#648F8A
Closest named color: Dusty Teal (#4C9085). oklch(61.7% 0.048 187), rgb(100, 143, 138).
Aa
Black text reads best on this color (5.83:1).
About this color
#648F8A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.048 and its hue 187°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Teal (#4C9085), ΔE 0.027 away. Black text reads best on it, at 5.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Dusty Teal (#4C9085) |
| Black text | 5.83:1 |
| White text | 3.59:1 |
Values
| HEX | #648F8A |
| RGB | rgb(100, 143, 138) |
| HSL | hsl(173, 18%, 48%) |
| OKLCH | oklch(61.7% 0.048 187) |
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 #648F8A | 3.59:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #648F8A | 5.83:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #648F8A text on white | 3.59:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #648F8A text on black | 5.83:1 | AA | Lc -38.2 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D0DCDA
oklch(88.5% 0.013 185.1)
-
Step 300
300
#B1C6C3
oklch(81% 0.023 186.4)
-
Step 400
400
#87A9A4
oklch(70.8% 0.038 185.4)
-
Step 500
500 (this color)
#648F8A
oklch(61.7% 0.048 187)
-
Step 600
600
#4F7D78
oklch(55.5% 0.051 187.1)
-
Step 700
700
#3F6A65
oklch(49.1% 0.049 186.3)
-
Step 800
800
#355653
oklch(42.7% 0.039 188.5)
-
Step 900
900
#2E4744
oklch(37.7% 0.031 186.5)
-
Step 950
950
#1B2A28
oklch(27.1% 0.021 185.7)
#648F8A 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) | #8B8A8A | 0.052 |
| Deuteranopia (no green cones) | #83848B | 0.049 |
| Tritanopia (no blue cones) | #56918D | 0.015 |
| Achromatopsia (no color) | #878787 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648F8A
#648F8A
oklch(61.7% 0.048 187)
- #9F7A80
#9F7A80
oklch(61.7% 0.047 7.7)
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 #648F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Teal #4C9085 ΔE 0.027
- Grey Teal #5E9B8A ΔE 0.036
- Steel Grey #6F828A ΔE 0.039
- Sea #3C9992 ΔE 0.041
- Slate Green #658D6D ΔE 0.041
- Steel #738595 ΔE 0.042
- Dull Teal #5F9E8F ΔE 0.042
- Light Slate Gray #778899 ΔE 0.043
Use #648F8A 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.