#678C97
Closest named color: Steel (#738595). oklch(61.6% 0.044 218.1), rgb(103, 140, 151).
Aa
Black text reads best on this color (5.77:1).
About this color
#678C97 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.044 and its hue 218°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.023 away. Black text reads best on it, at 5.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.77:1 |
| White text | 3.63:1 |
Values
| HEX | #678C97 |
| RGB | rgb(103, 140, 151) |
| HSL | hsl(194, 19%, 50%) |
| OKLCH | oklch(61.6% 0.044 218.1) |
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 #678C97 | 3.63:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #678C97 | 5.77:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #678C97 text on white | 3.63:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #678C97 text on black | 5.77:1 | AA | Lc -37.7 | 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
#E5EBED
oklch(93.6% 0.007 219.6)
-
Step 200
200
#D1DBDE
oklch(88.5% 0.012 217.6)
-
Step 300
300
#B2C4CA
oklch(80.8% 0.021 219.7)
-
Step 400
400
#89A6AF
oklch(70.6% 0.035 218.6)
-
Step 500
500 (this color)
#678C97
oklch(61.6% 0.044 218.1)
-
Step 600
600
#527A86
oklch(55.4% 0.048 218.6)
-
Step 700
700
#436772
oklch(49.1% 0.045 219)
-
Step 800
800
#37545D
oklch(42.7% 0.038 219.3)
-
Step 900
900
#30464C
oklch(37.8% 0.029 216.5)
-
Step 950
950
#1C292C
oklch(27% 0.019 213.5)
#678C97 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) | #858A98 | 0.039 |
| Deuteranopia (no green cones) | #7D8497 | 0.035 |
| Tritanopia (no blue cones) | #57908F | 0.027 |
| Achromatopsia (no color) | #868686 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678C97
#678C97
oklch(61.6% 0.044 218.1)
- #9E7C72
#9E7C72
oklch(61.6% 0.045 37)
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 #678C97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.023
- Light Slate Gray #778899 ΔE 0.023
- Blue Grey #758DA3 ΔE 0.027
- Steel Grey #6F828A ΔE 0.030
- Slate Gray #708090 ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.036
- Grey Blue #647D8E ΔE 0.043
- Dusty Blue #5A86AD ΔE 0.045
Use #678C97 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.