#66899A
Closest named color: Steel (#738595). oklch(61% 0.047 229.4), rgb(102, 137, 154).
Aa
Black text reads best on this color (5.60:1).
About this color
#66899A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.047 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.018 away. Black text reads best on it, at 5.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.60:1 |
| White text | 3.74:1 |
Values
| HEX | #66899A |
| RGB | rgb(102, 137, 154) |
| HSL | hsl(200, 20%, 50%) |
| OKLCH | oklch(61% 0.047 229.4) |
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 #66899A | 3.74:1 | AA large text | Lc -70.5 | Content text, not long reading |
| Black text on #66899A | 5.60:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #66899A text on white | 3.74:1 | AA large text | Lc 65.0 | Content text, not long reading |
| #66899A text on black | 5.60:1 | AA | Lc -36.7 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B2C4CD
oklch(80.9% 0.023 229.2)
-
Step 400
400
#8AA5B3
oklch(70.6% 0.036 230.5)
-
Step 500
500 (this color)
#66899A
oklch(61% 0.047 229.4)
-
Step 600
600
#53798B
oklch(55.5% 0.051 229.1)
-
Step 700
700
#446676
oklch(49.1% 0.047 229.1)
-
Step 800
800
#385360
oklch(42.6% 0.039 229.5)
-
Step 900
900
#31454F
oklch(37.8% 0.03 230.2)
-
Step 950
950
#1D282E
oklch(26.9% 0.019 232.2)
#66899A 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) | #80879B | 0.034 |
| Deuteranopia (no green cones) | #79819A | 0.032 |
| Tritanopia (no blue cones) | #558E8E | 0.033 |
| Achromatopsia (no color) | #848484 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66899A
#66899A
oklch(61% 0.047 229.4)
- #9B7B6A
#9B7B6A
oklch(60.9% 0.047 49.4)
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 #66899A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.018
- Light Slate Gray #778899 ΔE 0.021
- Blue Grey #758DA3 ΔE 0.026
- Slate Gray #708090 ΔE 0.027
- Steel Grey #6F828A ΔE 0.027
- Silver Lake Blue #778DA9 ΔE 0.034
- Grey Blue #647D8E ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.035
Use #66899A 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.