#667E8A
Closest named color: Grey Blue (#647D8E). oklch(57.8% 0.033 229.7), rgb(102, 126, 138).
Aa
Black text reads best on this color (4.91:1).
About this color
#667E8A is a medium-dark, muted teal or cyan. In OKLCH its lightness is 58%, its chroma 0.033 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Grey Blue (#647D8E), ΔE 0.008 away. Black text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Grey Blue (#647D8E) |
| Black text | 4.91:1 |
| White text | 4.27:1 |
Values
| HEX | #667E8A |
| RGB | rgb(102, 126, 138) |
| HSL | hsl(200, 15%, 47%) |
| OKLCH | oklch(57.8% 0.033 229.7) |
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 #667E8A | 4.27:1 | AA large text | Lc -75.0 | Fine for body text |
| Black text on #667E8A | 4.91:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #667E8A text on white | 4.27:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #667E8A text on black | 4.91:1 | AA | Lc -32.1 | 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 600.
-
Step 50
50
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B7C3C8
oklch(80.9% 0.015 224.5)
-
Step 400
400
#92A4AD
oklch(70.8% 0.024 229.2)
-
Step 500
500
#778D99
oklch(63% 0.031 231.8)
-
Step 600
600 (this color)
#667E8A
oklch(57.8% 0.033 229.7)
-
Step 700
700
#4F646F
oklch(49% 0.031 231)
-
Step 800
800
#41525A
oklch(42.7% 0.025 228.1)
-
Step 900
900
#37444A
oklch(37.7% 0.02 227.5)
-
Step 950
950
#20282B
oklch(27% 0.013 222.5)
#667E8A 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) | #787D8B | 0.025 |
| Deuteranopia (no green cones) | #73798A | 0.022 |
| Tritanopia (no blue cones) | #5B8182 | 0.023 |
| Achromatopsia (no color) | #7A7A7A | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #667E8A
#667E8A
oklch(57.8% 0.033 229.7)
- #8B7469
#8B7469
oklch(57.8% 0.033 47)
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 #667E8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grey Blue #647D8E ΔE 0.008
- Battleship Grey #6B7C85 ΔE 0.009
- Slate Gray #708090 ΔE 0.018
- Steel Grey #6F828A ΔE 0.018
- Battleship Gray #6C757D ΔE 0.028
- Steel #738595 ΔE 0.031
- Medium Grey #7D7F7C ΔE 0.038
- Gray #808080 ΔE 0.040
Use #667E8A 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.