#737D8A
Closest named color: Slate Gray (#708090). oklch(58.6% 0.023 255), rgb(115, 125, 138).
Aa
Black text reads best on this color (5.02:1).
About this color
#737D8A is a medium-dark close to neutral grey. In OKLCH its lightness is 59%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Slate Gray (#708090), ΔE 0.011 away. Black text reads best on it, at 5.02:1.
| Hue family | Neutrals |
| Lightness | medium-dark (59%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Slate Gray (#708090) |
| Black text | 5.02:1 |
| White text | 4.17:1 |
Values
| HEX | #737D8A |
| RGB | rgb(115, 125, 138) |
| HSL | hsl(214, 9%, 50%) |
| OKLCH | oklch(58.6% 0.023 255) |
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 #737D8A | 4.17:1 | AA large text | Lc -74.3 | Content text, not long reading |
| Black text on #737D8A | 5.02:1 | AA | Lc 35.3 | Non-text elements, placeholder text |
| #737D8A text on white | 4.17:1 | AA large text | Lc 68.8 | Content text, not long reading |
| #737D8A text on black | 5.02:1 | AA | Lc -32.9 | 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 600.
-
Step 50
50
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D6D9DD
oklch(88.4% 0.006 255.5)
-
Step 300
300
#BCC1C7
oklch(80.9% 0.01 252.8)
-
Step 400
400
#9AA1AB
oklch(70.7% 0.017 257.2)
-
Step 500
500
#818A97
oklch(63% 0.022 257.5)
-
Step 600
600 (this color)
#737D8A
oklch(58.6% 0.023 255)
-
Step 700
700
#59626D
oklch(49.2% 0.021 253.5)
-
Step 800
800
#495059
oklch(42.8% 0.017 254.7)
-
Step 900
900
#3D4249
oklch(37.7% 0.014 256.8)
-
Step 950
950
#24272B
oklch(27.1% 0.009 255.6)
#737D8A 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) | #797D8B | 0.009 |
| Deuteranopia (no green cones) | #767B8A | 0.007 |
| Tritanopia (no blue cones) | #6D8081 | 0.021 |
| Achromatopsia (no color) | #7C7C7C | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737D8A
#737D8A
oklch(58.6% 0.023 255)
- #847A6D
#847A6D
oklch(58.5% 0.023 74.5)
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 #737D8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Gray #708090 ΔE 0.011
- Battleship Grey #6B7C85 ΔE 0.014
- Steel Grey #6F828A ΔE 0.015
- Grey Blue #647D8E ΔE 0.021
- Steel #738595 ΔE 0.024
- Gray #808080 ΔE 0.027
- Medium Grey #7D7F7C ΔE 0.027
- Battleship Gray #6C757D ΔE 0.029
Use #737D8A 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.