#648990
Closest named color: Steel Grey (#6F828A). oklch(60.5% 0.042 210.5), rgb(100, 137, 144).
Aa
Black text reads best on this color (5.52:1).
About this color
#648990 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.042 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.022 away. Black text reads best on it, at 5.52:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.52:1 |
| White text | 3.80:1 |
Values
| HEX | #648990 |
| RGB | rgb(100, 137, 144) |
| HSL | hsl(190, 18%, 48%) |
| OKLCH | oklch(60.5% 0.042 210.5) |
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 #648990 | 3.80:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #648990 | 5.52:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #648990 text on white | 3.80:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #648990 text on black | 5.52:1 | AA | Lc -36.1 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B2C5C8
oklch(81% 0.021 208.1)
-
Step 400
400
#89A7AC
oklch(70.7% 0.034 208.8)
-
Step 500
500 (this color)
#648990
oklch(60.5% 0.042 210.5)
-
Step 600
600
#537B83
oklch(55.6% 0.046 211.5)
-
Step 700
700
#43686E
oklch(49.2% 0.043 208.7)
-
Step 800
800
#38545A
oklch(42.6% 0.035 212.5)
-
Step 900
900
#30464A
oklch(37.8% 0.028 210)
-
Step 950
950
#1C292B
oklch(27% 0.018 207.9)
#648990 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) | #838690 | 0.041 |
| Deuteranopia (no green cones) | #7B8090 | 0.038 |
| Tritanopia (no blue cones) | #558C8B | 0.021 |
| Achromatopsia (no color) | #838383 | 0.043 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648990
#648990
oklch(60.5% 0.042 210.5)
- #9A7973
#9A7973
oklch(60.6% 0.042 30.2)
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 #648990, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.022
- Steel #738595 ΔE 0.024
- Slate Gray #708090 ΔE 0.029
- Light Slate Gray #778899 ΔE 0.030
- Grey Blue #647D8E ΔE 0.035
- Battleship Grey #6B7C85 ΔE 0.036
- Blue Grey #758DA3 ΔE 0.038
- Dusty Teal #4C9085 ΔE 0.040
Use #648990 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.