#738C8F
Closest named color: Light Slate Gray (#778899). oklch(62.2% 0.029 205.4), rgb(115, 140, 143).
Aa
Black text reads best on this color (5.87:1).
About this color
#738C8F is a medium-light close to neutral grey. In OKLCH its lightness is 62%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Light Slate Gray (#778899), ΔE 0.023 away. Black text reads best on it, at 5.87:1.
| Hue family | Neutrals |
| Lightness | medium-light (62%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.87:1 |
| White text | 3.57:1 |
Values
| HEX | #738C8F |
| RGB | rgb(115, 140, 143) |
| HSL | hsl(186, 11%, 51%) |
| OKLCH | oklch(62.2% 0.029 205.4) |
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 #738C8F | 3.57:1 | AA large text | Lc -68.8 | Content text, not long reading |
| Black text on #738C8F | 5.87:1 | AA | Lc 40.8 | Non-text elements, placeholder text |
| #738C8F text on white | 3.57:1 | AA large text | Lc 63.3 | Content text, not long reading |
| #738C8F text on black | 5.87:1 | AA | Lc -38.4 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D3DBDB
oklch(88.5% 0.009 197)
-
Step 300
300
#B7C3C5
oklch(80.9% 0.014 208.8)
-
Step 400
400
#91A5A7
oklch(70.7% 0.023 204)
-
Step 500
500 (this color)
#738C8F
oklch(62.2% 0.029 205.4)
-
Step 600
600
#5E797C
oklch(55.6% 0.032 204.7)
-
Step 700
700
#4E6669
oklch(49.2% 0.029 205.7)
-
Step 800
800
#405355
oklch(42.7% 0.024 204.3)
-
Step 900
900
#364546
oklch(37.8% 0.019 201.4)
-
Step 950
950
#202829
oklch(27% 0.011 205.8)
#738C8F 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) | #888A8F | 0.029 |
| Deuteranopia (no green cones) | #83868F | 0.026 |
| Tritanopia (no blue cones) | #6B8E8D | 0.012 |
| Achromatopsia (no color) | #878787 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738C8F
#738C8F
oklch(62.2% 0.029 205.4)
- #97807E
#97807E
oklch(62.1% 0.029 23.8)
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 #738C8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.023
- Steel #738595 ΔE 0.025
- Steel Grey #6F828A ΔE 0.029
- Blue Grey #758DA3 ΔE 0.030
- Gray #808080 ΔE 0.036
- Slate Gray #708090 ΔE 0.036
- Medium Grey #7D7F7C ΔE 0.039
- Silver Lake Blue #778DA9 ΔE 0.040
Use #738C8F 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.