#17435F
Closest named color: Dark Grey Blue (#29465B). oklch(36.7% 0.068 240.3), rgb(23, 67, 95).
Aa
White text reads best on this color (10.47:1).
About this color
#17435F is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.068 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.023 away. White text reads best on it, at 10.47:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.00:1 |
| White text | 10.47:1 |
Values
| HEX | #17435F |
| RGB | rgb(23, 67, 95) |
| HSL | hsl(203, 61%, 23%) |
| OKLCH | oklch(36.7% 0.068 240.3) |
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 #17435F | 10.47:1 | AAA | Lc -98.1 | Preferred for body text |
| Black text on #17435F | 2.00:1 | Fails | Lc 9.9 | Not readable |
| #17435F text on white | 10.47:1 | AAA | Lc 94.1 | Preferred for body text |
| #17435F text on black | 2.00:1 | Fails | Lc -8.5 | Not readable |
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 900.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DF
oklch(81% 0.051 240.1)
-
Step 400
400
#71A8CF
oklch(70.8% 0.081 240.3)
-
Step 500
500
#4891C2
oklch(63.1% 0.104 240.5)
-
Step 600
600
#247BAF
oklch(55.7% 0.113 240.3)
-
Step 700
700
#146796
oklch(49.1% 0.105 240.3)
-
Step 800
800
#16547A
oklch(42.7% 0.088 240.9)
-
Step 900
900 (this color)
#17435F
oklch(36.7% 0.068 240.3)
-
Step 950
950
#112939
oklch(27% 0.042 240.1)
#17435F 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) | #364360 | 0.035 |
| Deuteranopia (no green cones) | #2C3C5F | 0.029 |
| Tritanopia (no blue cones) | #004A4D | 0.046 |
| Achromatopsia (no color) | #3F3F3F | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #17435F
#17435F
oklch(36.7% 0.068 240.3)
- #593515
#593515
oklch(36.6% 0.069 59.5)
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 #17435F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.023
- Charcoal #264653 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.035
- Midnight Green #073B4C ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.044
- Marine Blue #01386A ΔE 0.047
- Twilight Blue #0A437A ΔE 0.047
- Dark Teal #014D4E ΔE 0.052
Use #17435F 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.