#64899B
Closest named color: Steel (#738595). oklch(60.9% 0.049 229.5), rgb(100, 137, 155).
Aa
Black text reads best on this color (5.59:1).
About this color
#64899B is a medium-dark, muted teal or cyan. In OKLCH its lightness is 61%, its chroma 0.049 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Steel (#738595), ΔE 0.020 away. Black text reads best on it, at 5.59:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Steel (#738595) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #64899B |
| RGB | rgb(100, 137, 155) |
| HSL | hsl(200, 22%, 50%) |
| OKLCH | oklch(60.9% 0.049 229.5) |
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 #64899B | 3.75:1 | AA large text | Lc -70.6 | Content text, not long reading |
| Black text on #64899B | 5.59:1 | AA | Lc 39.0 | Non-text elements, placeholder text |
| #64899B text on white | 3.75:1 | AA large text | Lc 65.1 | Content text, not long reading |
| #64899B text on black | 5.59:1 | AA | Lc -36.6 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E5EBEE
oklch(93.6% 0.008 228.9)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B1C4CD
oklch(80.9% 0.024 227.8)
-
Step 400
400
#88A6B4
oklch(70.7% 0.039 227.9)
-
Step 500
500 (this color)
#64899B
oklch(60.9% 0.049 229.5)
-
Step 600
600
#527A8D
oklch(55.7% 0.053 229.3)
-
Step 700
700
#426678
oklch(49% 0.05 230.8)
-
Step 800
800
#375461
oklch(42.8% 0.041 227.8)
-
Step 900
900
#30454F
oklch(37.7% 0.031 229)
-
Step 950
950
#1C282F
oklch(26.9% 0.021 234.2)
#64899B 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) | #80879C | 0.037 |
| Deuteranopia (no green cones) | #78819B | 0.033 |
| Tritanopia (no blue cones) | #518E8F | 0.034 |
| Achromatopsia (no color) | #848484 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #64899B
#64899B
oklch(60.9% 0.049 229.5)
- #9C7B69
#9C7B69
oklch(61% 0.049 50)
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 #64899B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel #738595 ΔE 0.020
- Light Slate Gray #778899 ΔE 0.024
- Blue Grey #758DA3 ΔE 0.028
- Slate Gray #708090 ΔE 0.028
- Steel Grey #6F828A ΔE 0.029
- Dusty Blue #5A86AD ΔE 0.033
- Silver Lake Blue #778DA9 ΔE 0.035
- Grey Blue #647D8E ΔE 0.035
Use #64899B 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.