#678D94
Closest named color: Light Slate Gray (#778899). oklch(61.8% 0.043 210.2), rgb(103, 141, 148).
Aa
Black text reads best on this color (5.81:1).
About this color
#678D94 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.043 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Light Slate Gray (#778899), ΔE 0.027 away. Black text reads best on it, at 5.81:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.043) |
| Temperature | cool |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.81:1 |
| White text | 3.61:1 |
Values
| HEX | #678D94 |
| RGB | rgb(103, 141, 148) |
| HSL | hsl(189, 18%, 49%) |
| OKLCH | oklch(61.8% 0.043 210.2) |
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 #678D94 | 3.61:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #678D94 | 5.81:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #678D94 text on white | 3.61:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #678D94 text on black | 5.81:1 | AA | Lc -38.0 | 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
#E5EBEC
oklch(93.6% 0.007 208.8)
-
Step 200
200
#D1DBDD
oklch(88.4% 0.011 211)
-
Step 300
300
#B2C5C8
oklch(81% 0.021 208.1)
-
Step 400
400
#89A7AC
oklch(70.7% 0.034 208.8)
-
Step 500
500 (this color)
#678D94
oklch(61.8% 0.043 210.2)
-
Step 600
600
#527B83
oklch(55.6% 0.047 211.1)
-
Step 700
700
#42686F
oklch(49.2% 0.044 210.4)
-
Step 800
800
#37555A
oklch(42.8% 0.036 209)
-
Step 900
900
#30464A
oklch(37.8% 0.028 210)
-
Step 950
950
#1C292B
oklch(27% 0.018 207.9)
#678D94 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) | #878A94 | 0.042 |
| Deuteranopia (no green cones) | #7F8494 | 0.039 |
| Tritanopia (no blue cones) | #58908F | 0.021 |
| Achromatopsia (no color) | #878787 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678D94
#678D94
oklch(61.8% 0.043 210.2)
- #9E7C76
#9E7C76
oklch(61.7% 0.044 29.9)
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 #678D94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.027
- Steel #738595 ΔE 0.027
- Blue Grey #758DA3 ΔE 0.031
- Steel Grey #6F828A ΔE 0.031
- Slate Gray #708090 ΔE 0.037
- Silver Lake Blue #778DA9 ΔE 0.040
- Dusty Teal #4C9085 ΔE 0.041
- Grey Blue #647D8E ΔE 0.046
Use #678D94 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.