#678D8E
Closest named color: Steel Grey (#6F828A). oklch(61.6% 0.042 198.2), rgb(103, 141, 142).
Aa
Black text reads best on this color (5.77:1).
About this color
#678D8E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 62%, its chroma 0.042 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.031 away. Black text reads best on it, at 5.77:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (62%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.77:1 |
| White text | 3.63:1 |
Values
| HEX | #678D8E |
| RGB | rgb(103, 141, 142) |
| HSL | hsl(182, 16%, 48%) |
| OKLCH | oklch(61.6% 0.042 198.2) |
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 #678D8E | 3.63:1 | AA large text | Lc -69.4 | Content text, not long reading |
| Black text on #678D8E | 5.77:1 | AA | Lc 40.2 | Non-text elements, placeholder text |
| #678D8E text on white | 3.63:1 | AA large text | Lc 63.9 | Content text, not long reading |
| #678D8E text on black | 5.77:1 | AA | Lc -37.8 | 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
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D1DCDC
oklch(88.6% 0.012 196.9)
-
Step 300
300
#B2C5C5
oklch(80.9% 0.021 196.7)
-
Step 400
400
#89A7A8
oklch(70.6% 0.033 198.9)
-
Step 500
500 (this color)
#678D8E
oklch(61.6% 0.042 198.2)
-
Step 600
600
#537C7D
oklch(55.7% 0.046 197.9)
-
Step 700
700
#436869
oklch(49% 0.042 198)
-
Step 800
800
#375556
oklch(42.6% 0.036 198.6)
-
Step 900
900
#304647
oklch(37.6% 0.027 199.6)
-
Step 950
950
#1C2929
oklch(26.9% 0.018 196.1)
#678D8E 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) | #88898E | 0.044 |
| Deuteranopia (no green cones) | #80848E | 0.040 |
| Tritanopia (no blue cones) | #5A908D | 0.017 |
| Achromatopsia (no color) | #868686 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678D8E
#678D8E
oklch(61.6% 0.042 198.2)
- #9D7B7B
#9D7B7B
oklch(61.6% 0.042 18.4)
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 #678D8E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.031
- Steel #738595 ΔE 0.032
- Light Slate Gray #778899 ΔE 0.033
- Dusty Teal #4C9085 ΔE 0.035
- Blue Grey #758DA3 ΔE 0.039
- Slate Gray #708090 ΔE 0.040
- Grey Teal #5E9B8A ΔE 0.044
- Gray #808080 ΔE 0.045
Use #678D8E 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.