#678591
Closest named color: Steel Grey (#6F828A). oklch(59.8% 0.039 224.3), rgb(103, 133, 145).
Aa
Black text reads best on this color (5.34:1).
About this color
#678591 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 60%, its chroma 0.039 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Grey (#6F828A), ΔE 0.014 away. Black text reads best on it, at 5.34:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (60%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.34:1 |
| White text | 3.93:1 |
Values
| HEX | #678591 |
| RGB | rgb(103, 133, 145) |
| HSL | hsl(197, 17%, 49%) |
| OKLCH | oklch(59.8% 0.039 224.3) |
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 #678591 | 3.93:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #678591 | 5.34:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #678591 text on white | 3.93:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #678591 text on black | 5.34:1 | AA | Lc -35.0 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDE
oklch(88.5% 0.011 219.6)
-
Step 300
300
#B4C4CA
oklch(81% 0.019 222.2)
-
Step 400
400
#8DA5AF
oklch(70.7% 0.031 224.9)
-
Step 500
500 (this color)
#678591
oklch(59.8% 0.039 224.3)
-
Step 600
600
#597986
oklch(55.6% 0.042 224.9)
-
Step 700
700
#486671
oklch(49.1% 0.039 222.7)
-
Step 800
800
#3C535C
oklch(42.7% 0.032 224)
-
Step 900
900
#33454C
oklch(37.8% 0.026 223.7)
-
Step 950
950
#1E282C
oklch(26.9% 0.016 224.2)
#678591 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) | #7E8392 | 0.031 |
| Deuteranopia (no green cones) | #787E91 | 0.029 |
| Tritanopia (no blue cones) | #5A8989 | 0.025 |
| Achromatopsia (no color) | #808080 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678591
#678591
oklch(59.8% 0.039 224.3)
- #94796D
#94796D
oklch(59.8% 0.038 45.3)
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 #678591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.014
- Slate Gray #708090 ΔE 0.017
- Steel #738595 ΔE 0.017
- Grey Blue #647D8E ΔE 0.024
- Light Slate Gray #778899 ΔE 0.026
- Battleship Grey #6B7C85 ΔE 0.027
- Blue Grey #758DA3 ΔE 0.038
- Gray #808080 ΔE 0.039
Use #678591 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.