#738C8A
Closest named color: Light Slate Gray (#778899). oklch(62% 0.029 190.5), rgb(115, 140, 138).
Aa
Black text reads best on this color (5.84:1).
About this color
#738C8A is a medium-dark 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 0.030 away. Black text reads best on it, at 5.84:1.
| Hue family | Neutrals |
| Lightness | medium-dark (62%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Light Slate Gray (#778899) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #738C8A |
| RGB | rgb(115, 140, 138) |
| HSL | hsl(175, 10%, 50%) |
| OKLCH | oklch(62% 0.029 190.5) |
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 #738C8A | 3.59:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #738C8A | 5.84:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #738C8A text on white | 3.59:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #738C8A text on black | 5.84:1 | AA | Lc -38.2 | 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
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D4DBDA
oklch(88.6% 0.008 186.9)
-
Step 300
300
#B7C4C2
oklch(81% 0.015 185.9)
-
Step 400
400
#91A5A4
oklch(70.6% 0.022 193)
-
Step 500
500 (this color)
#738C8A
oklch(62% 0.029 190.5)
-
Step 600
600
#5F7977
oklch(55.5% 0.03 190.5)
-
Step 700
700
#4E6664
oklch(49% 0.029 189.9)
-
Step 800
800
#405352
oklch(42.6% 0.024 192.3)
-
Step 900
900
#364544
oklch(37.7% 0.019 191.3)
-
Step 950
950
#202828
oklch(26.9% 0.011 196.5)
#738C8A 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) | #89898A | 0.031 |
| Deuteranopia (no green cones) | #84858A | 0.029 |
| Tritanopia (no blue cones) | #6C8D8B | 0.009 |
| Achromatopsia (no color) | #878787 | 0.029 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #738C8A
#738C8A
oklch(62% 0.029 190.5)
- #977F82
#977F82
oklch(62% 0.03 9.5)
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 #738C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Slate Gray #778899 ΔE 0.030
- Steel Grey #6F828A ΔE 0.031
- Steel #738595 ΔE 0.031
- Gray #808080 ΔE 0.035
- Medium Grey #7D7F7C ΔE 0.037
- Blue Grey #758DA3 ΔE 0.038
- Slate Gray #708090 ΔE 0.040
- Dusty Teal #4C9085 ΔE 0.046
Use #738C8A 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.