#668790
Closest named color: Steel Grey (#6F828A). oklch(60.2% 0.04 216.3), rgb(102, 135, 144).
Aa
Black text reads best on this color (5.43:1).
About this color
#668790 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.040 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.017 away. Black text reads best on it, at 5.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.43:1 |
| White text | 3.86:1 |
Values
| HEX | #668790 |
| RGB | rgb(102, 135, 144) |
| HSL | hsl(193, 17%, 48%) |
| OKLCH | oklch(60.2% 0.04 216.3) |
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 #668790 | 3.86:1 | AA large text | Lc -71.6 | Content text, not long reading |
| Black text on #668790 | 5.43:1 | AA | Lc 38.0 | Non-text elements, placeholder text |
| #668790 text on white | 3.86:1 | AA large text | Lc 66.1 | Content text, not long reading |
| #668790 text on black | 5.43:1 | AA | Lc -35.6 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B3C4C9
oklch(80.9% 0.02 217.3)
-
Step 400
400
#8CA6AD
oklch(70.8% 0.031 215.8)
-
Step 500
500 (this color)
#668790
oklch(60.2% 0.04 216.3)
-
Step 600
600
#567A84
oklch(55.6% 0.043 216.9)
-
Step 700
700
#46676F
oklch(49.2% 0.04 214.5)
-
Step 800
800
#3A545B
oklch(42.8% 0.033 216.3)
-
Step 900
900
#32454A
oklch(37.6% 0.025 215.7)
-
Step 950
950
#1D292C
oklch(27.1% 0.017 214.8)
#668790 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) | #818591 | 0.036 |
| Deuteranopia (no green cones) | #7A7F90 | 0.033 |
| Tritanopia (no blue cones) | #588B8A | 0.023 |
| Achromatopsia (no color) | #828282 | 0.040 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #668790
#668790
oklch(60.2% 0.04 216.3)
- #977970
#977970
oklch(60.2% 0.04 37.3)
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 #668790, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.017
- Steel #738595 ΔE 0.020
- Slate Gray #708090 ΔE 0.023
- Light Slate Gray #778899 ΔE 0.027
- Grey Blue #647D8E ΔE 0.029
- Battleship Grey #6B7C85 ΔE 0.031
- Blue Grey #758DA3 ΔE 0.038
- Gray #808080 ΔE 0.040
Use #668790 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.