#678B87
Closest named color: Steel Grey (#6F828A). oklch(60.9% 0.041 187.7), rgb(103, 139, 135).
Aa
Black text reads best on this color (5.61:1).
About this color
#678B87 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.041 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.029 away. Black text reads best on it, at 5.61:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.041) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.61:1 |
| White text | 3.73:1 |
Values
| HEX | #678B87 |
| RGB | rgb(103, 139, 135) |
| HSL | hsl(173, 15%, 47%) |
| OKLCH | oklch(60.9% 0.041 187.7) |
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 #678B87 | 3.73:1 | AA large text | Lc -70.4 | Content text, not long reading |
| Black text on #678B87 | 5.61:1 | AA | Lc 39.2 | Non-text elements, placeholder text |
| #678B87 text on white | 3.73:1 | AA large text | Lc 64.9 | Content text, not long reading |
| #678B87 text on black | 5.61:1 | AA | Lc -36.8 | 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
#E6EBEA
oklch(93.6% 0.006 183)
-
Step 200
200
#D1DCDA
oklch(88.6% 0.012 184)
-
Step 300
300
#B3C5C3
oklch(80.9% 0.02 188.7)
-
Step 400
400
#8BA7A4
oklch(70.6% 0.031 188.5)
-
Step 500
500 (this color)
#678B87
oklch(60.9% 0.041 187.7)
-
Step 600
600
#557C78
oklch(55.6% 0.044 188)
-
Step 700
700
#456965
oklch(49.2% 0.042 187.2)
-
Step 800
800
#395552
oklch(42.6% 0.034 187.6)
-
Step 900
900
#314644
oklch(37.6% 0.027 188.8)
-
Step 950
950
#1D2928
oklch(26.9% 0.017 189.9)
#678B87 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) | #878787 | 0.043 |
| Deuteranopia (no green cones) | #808287 | 0.040 |
| Tritanopia (no blue cones) | #5C8D8A | 0.013 |
| Achromatopsia (no color) | #848484 | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678B87
#678B87
oklch(60.9% 0.041 187.7)
- #99797E
#99797E
oklch(60.8% 0.04 7.8)
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 #678B87, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.029
- Dusty Teal #4C9085 ΔE 0.032
- Steel #738595 ΔE 0.036
- Light Slate Gray #778899 ΔE 0.039
- Slate Gray #708090 ΔE 0.040
- Medium Grey #7D7F7C ΔE 0.041
- Gray #808080 ΔE 0.042
- Slate Green #658D6D ΔE 0.042
Use #678B87 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.