#737F89
Closest named color: Steel Grey (#6F828A). oklch(59% 0.021 243.2), rgb(115, 127, 137).
Aa
Black text reads best on this color (5.12:1).
About this color
#737F89 is a medium-dark close to neutral grey. In OKLCH its lightness is 59%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Steel Grey (#6F828A), ΔE 0.009 away. Black text reads best on it, at 5.12:1.
| Hue family | Neutrals |
| Lightness | medium-dark (59%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Steel Grey (#6F828A) |
| Black text | 5.12:1 |
| White text | 4.09:1 |
Values
| HEX | #737F89 |
| RGB | rgb(115, 127, 137) |
| HSL | hsl(207, 9%, 49%) |
| OKLCH | oklch(59% 0.021 243.2) |
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 #737F89 | 4.09:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #737F89 | 5.12:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #737F89 text on white | 4.09:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #737F89 text on black | 5.12:1 | AA | Lc -33.5 | 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
#E8EAEB
oklch(93.6% 0.003 228.8)
-
Step 200
200
#D6D9DC
oklch(88.4% 0.005 247.9)
-
Step 300
300
#BCC1C6
oklch(80.8% 0.009 247.9)
-
Step 400
400
#99A2A9
oklch(70.7% 0.014 241)
-
Step 500
500
#808B94
oklch(63.1% 0.019 242.6)
-
Step 600
600 (this color)
#737F89
oklch(59% 0.021 243.2)
-
Step 700
700
#58626B
oklch(49.1% 0.019 245.3)
-
Step 800
800
#485057
oklch(42.7% 0.016 244.5)
-
Step 900
900
#3C4248
oklch(37.6% 0.013 248.2)
-
Step 950
950
#23272A
oklch(27% 0.008 240.2)
#737F89 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) | #7B7F8A | 0.012 |
| Deuteranopia (no green cones) | #787C89 | 0.011 |
| Tritanopia (no blue cones) | #6D8182 | 0.017 |
| Achromatopsia (no color) | #7D7D7D | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #737F89
#737F89
oklch(59% 0.021 243.2)
- #877B71
#877B71
oklch(59.1% 0.021 62.2)
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 #737F89, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Grey #6F828A ΔE 0.009
- Slate Gray #708090 ΔE 0.011
- Battleship Grey #6B7C85 ΔE 0.016
- Steel #738595 ΔE 0.021
- Grey Blue #647D8E ΔE 0.023
- Gray #808080 ΔE 0.023
- Medium Grey #7D7F7C ΔE 0.023
- Light Slate Gray #778899 ΔE 0.031
Use #737F89 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.