#616F99
Closest named color: Dull Blue (#49759C). oklch(54.7% 0.068 269.9), rgb(97, 111, 153).
Aa
White text reads best on this color (4.95:1).
About this color
#616F99 is a medium-dark, muted blue. In OKLCH its lightness is 55%, its chroma 0.068 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.031 away. White text reads best on it, at 4.95:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.24:1 |
| White text | 4.95:1 |
Values
| HEX | #616F99 |
| RGB | rgb(97, 111, 153) |
| HSL | hsl(225, 22%, 49%) |
| OKLCH | oklch(54.7% 0.068 269.9) |
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 #616F99 | 4.95:1 | AA | Lc -79.7 | Fine for body text |
| Black text on #616F99 | 4.24:1 | AA large text | Lc 29.8 | Dividers and decoration only |
| #616F99 text on white | 4.95:1 | AA | Lc 74.2 | Content text, not long reading |
| #616F99 text on black | 4.24:1 | AA large text | Lc -27.5 | Dividers and decoration only |
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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D4D9E5
oklch(88.5% 0.017 267.8)
-
Step 300
300
#B9C0D5
oklch(80.9% 0.031 271)
-
Step 400
400
#94A0C0
oklch(70.7% 0.049 269)
-
Step 500
500
#7A88B0
oklch(63% 0.063 269.6)
-
Step 600
600 (this color)
#616F99
oklch(54.7% 0.068 269.9)
-
Step 700
700
#525F85
oklch(49% 0.063 269.5)
-
Step 800
800
#444E6C
oklch(42.8% 0.052 269.9)
-
Step 900
900
#394158
oklch(37.8% 0.041 269.5)
-
Step 950
950
#212633
oklch(27% 0.025 268.3)
#616F99 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) | #61739B | 0.011 |
| Deuteranopia (no green cones) | #5C6E98 | 0.008 |
| Tritanopia (no blue cones) | #50777E | 0.060 |
| Achromatopsia (no color) | #707070 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #616F99
#616F99
oklch(54.7% 0.068 269.9)
- #806F41
#806F41
oklch(54.7% 0.067 89.8)
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 #616F99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.031
- Metallic Blue #4F738E ΔE 0.033
- Stormy Blue #507B9C ΔE 0.037
- Cerulean #457B9D ΔE 0.043
- Muted Blue #3B719F ΔE 0.043
- Flat Blue #3C73A8 ΔE 0.045
- Grey Blue #647D8E ΔE 0.050
- French Blue #436BAD ΔE 0.051
Use #616F99 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.